avr128da48 curiosity nano user guide - microchip...
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AVR128DA48 Curiosity Nano AVR128DA48 Curiosity Nano User Guide
PrefaceThe AVR128DA48 Curiosity Nano Evaluation Kit is a hardware platform to evaluate microcontrollers in the AVR-DAfamily This board has the AVR128DA48 microcontroller (MCU) mounted
Supported by Atmel Studio and Microchip MPLABreg X Integrated Development Environments (IDEs) the boardprovides easy access to the features of the AVR128DA48 to explore how to integrate the device into a customdesign
The Curiosity Nano series of evaluation boards include an on-board debugger No external tools are necessary toprogram and debug the AVR128DA48
bull MPLABreg X IDE and Atmel Studio - Software to discover configure develop program and debug Microchipmicrocontrollers
bull Code examples in Atmel START - Get started with code examples or generate drivers for a customapplication
bull Code examples on GitHub - Get started with code examplesbull AVR128DA48 website - Find documentation datasheets sample and purchase microcontrollersbull AVR128DA48 Curiosity Nano website - Kit information latest user guide and design documentation
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 1
Table of Contents
Preface1
1 Introduction 4
11 Features 412 Kit Overview 4
2 Getting Started 5
21 Quick Start522 Design Documentation and Relevant Links 5
3 Curiosity Nano7
31 On-Board Debugger Overview7311 Debugger7312 Virtual Serial Port (CDC)8
3121 Overview 83122 Operating System Support 83123 Limitations 93124 Signaling93125 Advanced Use 9
313 Mass Storage Device103131 Mass Storage Device Implementation103132 Fuse Bytes113133 Limitations of Drag-and-Drop Programming113134 Special Commands 11
314 Data Gateway Interface (DGI) 123141 Debug GPIO123142 Timestamping12
32 Curiosity Nano Standard Pinout1333 Power Supply 13
331 Target Regulator 14332 External Supply15333 VBUS Output Pin16334 Power Supply Exceptions16
34 Low Power Measurement1735 Programming External Microcontrollers 18
351 Supported Devices 18352 Software Configuration 18353 Hardware Modifications 19354 Connecting to External Microcontrollers20
36 Connecting External Debuggers 21
4 Hardware User Guide 24
41 Connectors24411 AVR128DA48 Curiosity Nano Pinout24412 Using Pin Headers24
42 Peripherals 25
AVR128DA48 Curiosity Nano
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421 LED25422 Mechanical Switch25423 Crystal25424 On-Board Debugger Implementation26
4241 On-Board Debugger Connections 26
5 Hardware Revision History and Known Issues 27
51 Identifying Product ID and Revision 2752 Revision 327
6 Document Revision History28
7 Appendix 29
71 Schematic2972 Assembly Drawing3173 Curiosity Nano Base for Click boardstrade 3274 Disconnecting the On-board Debugger3375 Getting Started with IAR34
The Microchip Website37
Product Change Notification Service37
Customer Support 37
Microchip Devices Code Protection Feature 37
Legal Notice 37
Trademarks 38
Quality Management System 38
Worldwide Sales and Service39
AVR128DA48 Curiosity Nano
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1 Introduction
11 Featuresbull AVR128DA48-IPT Microcontrollerbull One Yellow User LEDbull One Mechanical User Switchbull One 32768 kHz Crystalbull On-Board Debugger
ndash Board identification in Atmel StudioMicrochip MPLABreg X IDEndash One green power and status LEDndash Programming and debuggingndash Virtual serial port (CDC)ndash Two debug GPIO channels (DGI GPIO)
bull USB Poweredbull Adjustable Target Voltage
ndash MIC5353 LDO regulator controlled by the on-board debuggerndash 18-51V output voltage (limited by USB input voltage)ndash 500 mA maximum output current (limited by ambient temperature and output voltage)
12 Kit OverviewThe Microchip AVR128DA48 Curiosity Nano Evaluation Kit is a hardware platform to evaluate the AVR128DA48microcontroller
Figure 1-1 AVR128DA48 Curiosity Nano Evaluation Kit Overview
Micro USB Connector
DebuggerPowerStatus
LED32768 kHz
CrystalUser LED
(LED0)User Switch
(SW0)AVR128DA48
MCU
AVR128DA48 Curiosity NanoIntroduction
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2 Getting Started
21 Quick StartSteps to start exploring the AVR128DA48 Curiosity Nano Board
1 Download Atmel StudioMicrochip MPLABreg X IDE2 Launch Atmel StudioMicrochip MPLABreg X IDE3 Optional Use MPLABreg Code Configurator or Atmel START to generate drivers and examples4 Write your application code5 Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB port on the
board
Driver InstallationWhen the board is connected to your computer for the first time the operating system will perform a driver softwareinstallation The driver file supports both 32- and 64-bit versions of Microsoftreg Windowsreg XP Windows VistaregWindows 7 Windows 8 and Windows 10 The drivers for the board are included with Atmel StudioMicrochipMPLABreg X IDE
Kit WindowOnce the board is powered the green status LED will be lit and Atmel StudioMicrochip MPLABreg X IDE will auto-detect which boards are connected Atmel StudioMicrochip MPLABreg X IDE will present relevant information like datasheets and board documentation The AVR128DA48 device on the AVR128DA48 Curiosity Nano Board isprogrammed and debugged by the on-board debugger and therefore no external programmer or debugger tool isrequired
Tip The Kit Window can be opened in MPLAB X IDE through the menu bar Window gt Kit Window
22 Design Documentation and Relevant LinksThe following list contains links to the most relevant documents and software for the AVR128DA48 Curiosity NanoBoard
bull MPLABreg X IDE - MPLAB X IDE is a software program that runs on a PC (Windowsreg Mac OSreg Linuxreg) todevelop applications for Microchip microcontrollers and digital signal controllers It is called an IntegratedDevelopment Environment (IDE) because it provides a single integrated ldquoenvironmentrdquo to develop code forembedded microcontrollers
bull Atmel Studio - Free IDE for the development of CC++ and assembler code for microcontrollersbull IAR Embedded Workbenchreg for AVRreg - This is a commercial CC++ compiler that is available for AVR
microcontrollers There is a 30-day evaluation version as well as a 4 KB code-size-limited kick-start versionavailable from their website
bull MPLABreg Code Configurator - MPLAB Code Configurator (MCC) is a free software plug-in that provides agraphical interface to configure peripherals and functions specific to your application
bull Atmel START - Atmel START is an online tool that hosts code examples helps the user to select and configuresoftware components and tailor your embedded application in a usable and optimized manner
bull Microchip Sample Store - Microchip sample store where you can order samples of devicesbull MPLAB Data Visualizer - MPLAB Data Visualizer is a program used for processing and visualizing data The
Data Visualizer can receive data from various sources such as serial ports and on-board debuggerrsquos DataGateway Interface as found on Curiosity Nano and Xplained Pro boards
AVR128DA48 Curiosity NanoGetting Started
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bull Studio Data Visualizer - Studio Data Visualizer is a program used for processing and visualizing data TheData Visualizer can receive data from various sources such as serial ports on-board debuggerrsquos Data GatewayInterface as found on Curiosity Nano and Xplained Pro boards and power data from the Power Debugger
bull Microchip PICreg and AVR Examples - Microchip PIC and AVR Device Examples is a collection of examplesand labs that use Microchip development boards to showcase the use of PIC and AVR device peripherals
bull Microchip PICreg and AVR Solutions - Microchip PIC and AVR Device Solutions contains complete applicationsfor use with Microchip development boards ready to be adapted and extended
bull AVR128DA48 Curiosity Nano website - Kit information latest user guide and design documentationbull AVR128DA48 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT
AVR128DA48 Curiosity NanoGetting Started
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3 Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers IOs Theplatform consists of a series of low pin count microcontroller (MCU) boards with on-board debuggers which areintegrated with Atmel StudioMicrochip MPLABreg X IDE Each board is identified in the IDE When plugged in a KitWindow is displayed with links to key documentation including relevant user guides application notes data sheetsand example code Everything is easy to find The on-board debugger features a virtual serial port (CDC) for serialcommunication to a host PC and a Data Gateway Interface (DGI) with debug GPIO pin(s)
31 On-Board Debugger OverviewAVR128DA48 Curiosity Nano contains an on-board debugger for programming and debugging The on-boarddebugger is a composite USB device consisting of several interfaces
bull A debugger that can program and debug the AVR128DA48 in Atmel StudioMicrochip MPLABreg X IDEbull A mass storage device that allows drag-and-drop programming of the AVR128DA48bull A virtual serial port (CDC) that is connected to a Universal Asynchronous ReceiverTransmitter (UART) on the
AVR128DA48 and provides an easy way to communicate with the target application through terminal softwarebull A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize
program flow
The on-board debugger controls a Power and Status LED (marked PS) on the AVR128DA48 Curiosity Nano BoardThe table below shows how the LED is controlled in different operation modes
Table 3-1 On-Board Debugger LED Control
Operation Mode Power and Status LED
Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator The LED blinks slowly during programmingdebugging
Drag-and-dropprogramming Success The LED blinks slowly for 2 sec
Failure The LED blinks rapidly for 2 sec
Fault The LED blinks rapidly if a power fault is detected
SleepOff The LED is OFF The on-board debugger is either in a sleep mode or powered downThis can occur if the board is externally powered
Info Slow blinking is approximately 1 Hz and rapid blinking is approximately 5 Hz
311 DebuggerThe on-board debugger on the AVR128DA48 Curiosity Nano Board appears as a Human Interface Device (HID) onthe host computerrsquos USB subsystem The debugger supports full-featured programming and debugging of theAVR128DA48 using Atmel StudioMicrochip MPLABreg X IDE as well as some third-party IDEs
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Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
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Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 18
To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Table of Contents
Preface1
1 Introduction 4
11 Features 412 Kit Overview 4
2 Getting Started 5
21 Quick Start522 Design Documentation and Relevant Links 5
3 Curiosity Nano7
31 On-Board Debugger Overview7311 Debugger7312 Virtual Serial Port (CDC)8
3121 Overview 83122 Operating System Support 83123 Limitations 93124 Signaling93125 Advanced Use 9
313 Mass Storage Device103131 Mass Storage Device Implementation103132 Fuse Bytes113133 Limitations of Drag-and-Drop Programming113134 Special Commands 11
314 Data Gateway Interface (DGI) 123141 Debug GPIO123142 Timestamping12
32 Curiosity Nano Standard Pinout1333 Power Supply 13
331 Target Regulator 14332 External Supply15333 VBUS Output Pin16334 Power Supply Exceptions16
34 Low Power Measurement1735 Programming External Microcontrollers 18
351 Supported Devices 18352 Software Configuration 18353 Hardware Modifications 19354 Connecting to External Microcontrollers20
36 Connecting External Debuggers 21
4 Hardware User Guide 24
41 Connectors24411 AVR128DA48 Curiosity Nano Pinout24412 Using Pin Headers24
42 Peripherals 25
AVR128DA48 Curiosity Nano
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421 LED25422 Mechanical Switch25423 Crystal25424 On-Board Debugger Implementation26
4241 On-Board Debugger Connections 26
5 Hardware Revision History and Known Issues 27
51 Identifying Product ID and Revision 2752 Revision 327
6 Document Revision History28
7 Appendix 29
71 Schematic2972 Assembly Drawing3173 Curiosity Nano Base for Click boardstrade 3274 Disconnecting the On-board Debugger3375 Getting Started with IAR34
The Microchip Website37
Product Change Notification Service37
Customer Support 37
Microchip Devices Code Protection Feature 37
Legal Notice 37
Trademarks 38
Quality Management System 38
Worldwide Sales and Service39
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 3
1 Introduction
11 Featuresbull AVR128DA48-IPT Microcontrollerbull One Yellow User LEDbull One Mechanical User Switchbull One 32768 kHz Crystalbull On-Board Debugger
ndash Board identification in Atmel StudioMicrochip MPLABreg X IDEndash One green power and status LEDndash Programming and debuggingndash Virtual serial port (CDC)ndash Two debug GPIO channels (DGI GPIO)
bull USB Poweredbull Adjustable Target Voltage
ndash MIC5353 LDO regulator controlled by the on-board debuggerndash 18-51V output voltage (limited by USB input voltage)ndash 500 mA maximum output current (limited by ambient temperature and output voltage)
12 Kit OverviewThe Microchip AVR128DA48 Curiosity Nano Evaluation Kit is a hardware platform to evaluate the AVR128DA48microcontroller
Figure 1-1 AVR128DA48 Curiosity Nano Evaluation Kit Overview
Micro USB Connector
DebuggerPowerStatus
LED32768 kHz
CrystalUser LED
(LED0)User Switch
(SW0)AVR128DA48
MCU
AVR128DA48 Curiosity NanoIntroduction
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 4
2 Getting Started
21 Quick StartSteps to start exploring the AVR128DA48 Curiosity Nano Board
1 Download Atmel StudioMicrochip MPLABreg X IDE2 Launch Atmel StudioMicrochip MPLABreg X IDE3 Optional Use MPLABreg Code Configurator or Atmel START to generate drivers and examples4 Write your application code5 Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB port on the
board
Driver InstallationWhen the board is connected to your computer for the first time the operating system will perform a driver softwareinstallation The driver file supports both 32- and 64-bit versions of Microsoftreg Windowsreg XP Windows VistaregWindows 7 Windows 8 and Windows 10 The drivers for the board are included with Atmel StudioMicrochipMPLABreg X IDE
Kit WindowOnce the board is powered the green status LED will be lit and Atmel StudioMicrochip MPLABreg X IDE will auto-detect which boards are connected Atmel StudioMicrochip MPLABreg X IDE will present relevant information like datasheets and board documentation The AVR128DA48 device on the AVR128DA48 Curiosity Nano Board isprogrammed and debugged by the on-board debugger and therefore no external programmer or debugger tool isrequired
Tip The Kit Window can be opened in MPLAB X IDE through the menu bar Window gt Kit Window
22 Design Documentation and Relevant LinksThe following list contains links to the most relevant documents and software for the AVR128DA48 Curiosity NanoBoard
bull MPLABreg X IDE - MPLAB X IDE is a software program that runs on a PC (Windowsreg Mac OSreg Linuxreg) todevelop applications for Microchip microcontrollers and digital signal controllers It is called an IntegratedDevelopment Environment (IDE) because it provides a single integrated ldquoenvironmentrdquo to develop code forembedded microcontrollers
bull Atmel Studio - Free IDE for the development of CC++ and assembler code for microcontrollersbull IAR Embedded Workbenchreg for AVRreg - This is a commercial CC++ compiler that is available for AVR
microcontrollers There is a 30-day evaluation version as well as a 4 KB code-size-limited kick-start versionavailable from their website
bull MPLABreg Code Configurator - MPLAB Code Configurator (MCC) is a free software plug-in that provides agraphical interface to configure peripherals and functions specific to your application
bull Atmel START - Atmel START is an online tool that hosts code examples helps the user to select and configuresoftware components and tailor your embedded application in a usable and optimized manner
bull Microchip Sample Store - Microchip sample store where you can order samples of devicesbull MPLAB Data Visualizer - MPLAB Data Visualizer is a program used for processing and visualizing data The
Data Visualizer can receive data from various sources such as serial ports and on-board debuggerrsquos DataGateway Interface as found on Curiosity Nano and Xplained Pro boards
AVR128DA48 Curiosity NanoGetting Started
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 5
bull Studio Data Visualizer - Studio Data Visualizer is a program used for processing and visualizing data TheData Visualizer can receive data from various sources such as serial ports on-board debuggerrsquos Data GatewayInterface as found on Curiosity Nano and Xplained Pro boards and power data from the Power Debugger
bull Microchip PICreg and AVR Examples - Microchip PIC and AVR Device Examples is a collection of examplesand labs that use Microchip development boards to showcase the use of PIC and AVR device peripherals
bull Microchip PICreg and AVR Solutions - Microchip PIC and AVR Device Solutions contains complete applicationsfor use with Microchip development boards ready to be adapted and extended
bull AVR128DA48 Curiosity Nano website - Kit information latest user guide and design documentationbull AVR128DA48 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT
AVR128DA48 Curiosity NanoGetting Started
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 6
3 Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers IOs Theplatform consists of a series of low pin count microcontroller (MCU) boards with on-board debuggers which areintegrated with Atmel StudioMicrochip MPLABreg X IDE Each board is identified in the IDE When plugged in a KitWindow is displayed with links to key documentation including relevant user guides application notes data sheetsand example code Everything is easy to find The on-board debugger features a virtual serial port (CDC) for serialcommunication to a host PC and a Data Gateway Interface (DGI) with debug GPIO pin(s)
31 On-Board Debugger OverviewAVR128DA48 Curiosity Nano contains an on-board debugger for programming and debugging The on-boarddebugger is a composite USB device consisting of several interfaces
bull A debugger that can program and debug the AVR128DA48 in Atmel StudioMicrochip MPLABreg X IDEbull A mass storage device that allows drag-and-drop programming of the AVR128DA48bull A virtual serial port (CDC) that is connected to a Universal Asynchronous ReceiverTransmitter (UART) on the
AVR128DA48 and provides an easy way to communicate with the target application through terminal softwarebull A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize
program flow
The on-board debugger controls a Power and Status LED (marked PS) on the AVR128DA48 Curiosity Nano BoardThe table below shows how the LED is controlled in different operation modes
Table 3-1 On-Board Debugger LED Control
Operation Mode Power and Status LED
Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator The LED blinks slowly during programmingdebugging
Drag-and-dropprogramming Success The LED blinks slowly for 2 sec
Failure The LED blinks rapidly for 2 sec
Fault The LED blinks rapidly if a power fault is detected
SleepOff The LED is OFF The on-board debugger is either in a sleep mode or powered downThis can occur if the board is externally powered
Info Slow blinking is approximately 1 Hz and rapid blinking is approximately 5 Hz
311 DebuggerThe on-board debugger on the AVR128DA48 Curiosity Nano Board appears as a Human Interface Device (HID) onthe host computerrsquos USB subsystem The debugger supports full-featured programming and debugging of theAVR128DA48 using Atmel StudioMicrochip MPLABreg X IDE as well as some third-party IDEs
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 7
Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
AVR128DA48 Curiosity NanoCuriosity Nano
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Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
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Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
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Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
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Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
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4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
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Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
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Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
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bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
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Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
421 LED25422 Mechanical Switch25423 Crystal25424 On-Board Debugger Implementation26
4241 On-Board Debugger Connections 26
5 Hardware Revision History and Known Issues 27
51 Identifying Product ID and Revision 2752 Revision 327
6 Document Revision History28
7 Appendix 29
71 Schematic2972 Assembly Drawing3173 Curiosity Nano Base for Click boardstrade 3274 Disconnecting the On-board Debugger3375 Getting Started with IAR34
The Microchip Website37
Product Change Notification Service37
Customer Support 37
Microchip Devices Code Protection Feature 37
Legal Notice 37
Trademarks 38
Quality Management System 38
Worldwide Sales and Service39
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 3
1 Introduction
11 Featuresbull AVR128DA48-IPT Microcontrollerbull One Yellow User LEDbull One Mechanical User Switchbull One 32768 kHz Crystalbull On-Board Debugger
ndash Board identification in Atmel StudioMicrochip MPLABreg X IDEndash One green power and status LEDndash Programming and debuggingndash Virtual serial port (CDC)ndash Two debug GPIO channels (DGI GPIO)
bull USB Poweredbull Adjustable Target Voltage
ndash MIC5353 LDO regulator controlled by the on-board debuggerndash 18-51V output voltage (limited by USB input voltage)ndash 500 mA maximum output current (limited by ambient temperature and output voltage)
12 Kit OverviewThe Microchip AVR128DA48 Curiosity Nano Evaluation Kit is a hardware platform to evaluate the AVR128DA48microcontroller
Figure 1-1 AVR128DA48 Curiosity Nano Evaluation Kit Overview
Micro USB Connector
DebuggerPowerStatus
LED32768 kHz
CrystalUser LED
(LED0)User Switch
(SW0)AVR128DA48
MCU
AVR128DA48 Curiosity NanoIntroduction
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 4
2 Getting Started
21 Quick StartSteps to start exploring the AVR128DA48 Curiosity Nano Board
1 Download Atmel StudioMicrochip MPLABreg X IDE2 Launch Atmel StudioMicrochip MPLABreg X IDE3 Optional Use MPLABreg Code Configurator or Atmel START to generate drivers and examples4 Write your application code5 Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB port on the
board
Driver InstallationWhen the board is connected to your computer for the first time the operating system will perform a driver softwareinstallation The driver file supports both 32- and 64-bit versions of Microsoftreg Windowsreg XP Windows VistaregWindows 7 Windows 8 and Windows 10 The drivers for the board are included with Atmel StudioMicrochipMPLABreg X IDE
Kit WindowOnce the board is powered the green status LED will be lit and Atmel StudioMicrochip MPLABreg X IDE will auto-detect which boards are connected Atmel StudioMicrochip MPLABreg X IDE will present relevant information like datasheets and board documentation The AVR128DA48 device on the AVR128DA48 Curiosity Nano Board isprogrammed and debugged by the on-board debugger and therefore no external programmer or debugger tool isrequired
Tip The Kit Window can be opened in MPLAB X IDE through the menu bar Window gt Kit Window
22 Design Documentation and Relevant LinksThe following list contains links to the most relevant documents and software for the AVR128DA48 Curiosity NanoBoard
bull MPLABreg X IDE - MPLAB X IDE is a software program that runs on a PC (Windowsreg Mac OSreg Linuxreg) todevelop applications for Microchip microcontrollers and digital signal controllers It is called an IntegratedDevelopment Environment (IDE) because it provides a single integrated ldquoenvironmentrdquo to develop code forembedded microcontrollers
bull Atmel Studio - Free IDE for the development of CC++ and assembler code for microcontrollersbull IAR Embedded Workbenchreg for AVRreg - This is a commercial CC++ compiler that is available for AVR
microcontrollers There is a 30-day evaluation version as well as a 4 KB code-size-limited kick-start versionavailable from their website
bull MPLABreg Code Configurator - MPLAB Code Configurator (MCC) is a free software plug-in that provides agraphical interface to configure peripherals and functions specific to your application
bull Atmel START - Atmel START is an online tool that hosts code examples helps the user to select and configuresoftware components and tailor your embedded application in a usable and optimized manner
bull Microchip Sample Store - Microchip sample store where you can order samples of devicesbull MPLAB Data Visualizer - MPLAB Data Visualizer is a program used for processing and visualizing data The
Data Visualizer can receive data from various sources such as serial ports and on-board debuggerrsquos DataGateway Interface as found on Curiosity Nano and Xplained Pro boards
AVR128DA48 Curiosity NanoGetting Started
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bull Studio Data Visualizer - Studio Data Visualizer is a program used for processing and visualizing data TheData Visualizer can receive data from various sources such as serial ports on-board debuggerrsquos Data GatewayInterface as found on Curiosity Nano and Xplained Pro boards and power data from the Power Debugger
bull Microchip PICreg and AVR Examples - Microchip PIC and AVR Device Examples is a collection of examplesand labs that use Microchip development boards to showcase the use of PIC and AVR device peripherals
bull Microchip PICreg and AVR Solutions - Microchip PIC and AVR Device Solutions contains complete applicationsfor use with Microchip development boards ready to be adapted and extended
bull AVR128DA48 Curiosity Nano website - Kit information latest user guide and design documentationbull AVR128DA48 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT
AVR128DA48 Curiosity NanoGetting Started
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 6
3 Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers IOs Theplatform consists of a series of low pin count microcontroller (MCU) boards with on-board debuggers which areintegrated with Atmel StudioMicrochip MPLABreg X IDE Each board is identified in the IDE When plugged in a KitWindow is displayed with links to key documentation including relevant user guides application notes data sheetsand example code Everything is easy to find The on-board debugger features a virtual serial port (CDC) for serialcommunication to a host PC and a Data Gateway Interface (DGI) with debug GPIO pin(s)
31 On-Board Debugger OverviewAVR128DA48 Curiosity Nano contains an on-board debugger for programming and debugging The on-boarddebugger is a composite USB device consisting of several interfaces
bull A debugger that can program and debug the AVR128DA48 in Atmel StudioMicrochip MPLABreg X IDEbull A mass storage device that allows drag-and-drop programming of the AVR128DA48bull A virtual serial port (CDC) that is connected to a Universal Asynchronous ReceiverTransmitter (UART) on the
AVR128DA48 and provides an easy way to communicate with the target application through terminal softwarebull A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize
program flow
The on-board debugger controls a Power and Status LED (marked PS) on the AVR128DA48 Curiosity Nano BoardThe table below shows how the LED is controlled in different operation modes
Table 3-1 On-Board Debugger LED Control
Operation Mode Power and Status LED
Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator The LED blinks slowly during programmingdebugging
Drag-and-dropprogramming Success The LED blinks slowly for 2 sec
Failure The LED blinks rapidly for 2 sec
Fault The LED blinks rapidly if a power fault is detected
SleepOff The LED is OFF The on-board debugger is either in a sleep mode or powered downThis can occur if the board is externally powered
Info Slow blinking is approximately 1 Hz and rapid blinking is approximately 5 Hz
311 DebuggerThe on-board debugger on the AVR128DA48 Curiosity Nano Board appears as a Human Interface Device (HID) onthe host computerrsquos USB subsystem The debugger supports full-featured programming and debugging of theAVR128DA48 using Atmel StudioMicrochip MPLABreg X IDE as well as some third-party IDEs
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Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
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Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 18
To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
1 Introduction
11 Featuresbull AVR128DA48-IPT Microcontrollerbull One Yellow User LEDbull One Mechanical User Switchbull One 32768 kHz Crystalbull On-Board Debugger
ndash Board identification in Atmel StudioMicrochip MPLABreg X IDEndash One green power and status LEDndash Programming and debuggingndash Virtual serial port (CDC)ndash Two debug GPIO channels (DGI GPIO)
bull USB Poweredbull Adjustable Target Voltage
ndash MIC5353 LDO regulator controlled by the on-board debuggerndash 18-51V output voltage (limited by USB input voltage)ndash 500 mA maximum output current (limited by ambient temperature and output voltage)
12 Kit OverviewThe Microchip AVR128DA48 Curiosity Nano Evaluation Kit is a hardware platform to evaluate the AVR128DA48microcontroller
Figure 1-1 AVR128DA48 Curiosity Nano Evaluation Kit Overview
Micro USB Connector
DebuggerPowerStatus
LED32768 kHz
CrystalUser LED
(LED0)User Switch
(SW0)AVR128DA48
MCU
AVR128DA48 Curiosity NanoIntroduction
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 4
2 Getting Started
21 Quick StartSteps to start exploring the AVR128DA48 Curiosity Nano Board
1 Download Atmel StudioMicrochip MPLABreg X IDE2 Launch Atmel StudioMicrochip MPLABreg X IDE3 Optional Use MPLABreg Code Configurator or Atmel START to generate drivers and examples4 Write your application code5 Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB port on the
board
Driver InstallationWhen the board is connected to your computer for the first time the operating system will perform a driver softwareinstallation The driver file supports both 32- and 64-bit versions of Microsoftreg Windowsreg XP Windows VistaregWindows 7 Windows 8 and Windows 10 The drivers for the board are included with Atmel StudioMicrochipMPLABreg X IDE
Kit WindowOnce the board is powered the green status LED will be lit and Atmel StudioMicrochip MPLABreg X IDE will auto-detect which boards are connected Atmel StudioMicrochip MPLABreg X IDE will present relevant information like datasheets and board documentation The AVR128DA48 device on the AVR128DA48 Curiosity Nano Board isprogrammed and debugged by the on-board debugger and therefore no external programmer or debugger tool isrequired
Tip The Kit Window can be opened in MPLAB X IDE through the menu bar Window gt Kit Window
22 Design Documentation and Relevant LinksThe following list contains links to the most relevant documents and software for the AVR128DA48 Curiosity NanoBoard
bull MPLABreg X IDE - MPLAB X IDE is a software program that runs on a PC (Windowsreg Mac OSreg Linuxreg) todevelop applications for Microchip microcontrollers and digital signal controllers It is called an IntegratedDevelopment Environment (IDE) because it provides a single integrated ldquoenvironmentrdquo to develop code forembedded microcontrollers
bull Atmel Studio - Free IDE for the development of CC++ and assembler code for microcontrollersbull IAR Embedded Workbenchreg for AVRreg - This is a commercial CC++ compiler that is available for AVR
microcontrollers There is a 30-day evaluation version as well as a 4 KB code-size-limited kick-start versionavailable from their website
bull MPLABreg Code Configurator - MPLAB Code Configurator (MCC) is a free software plug-in that provides agraphical interface to configure peripherals and functions specific to your application
bull Atmel START - Atmel START is an online tool that hosts code examples helps the user to select and configuresoftware components and tailor your embedded application in a usable and optimized manner
bull Microchip Sample Store - Microchip sample store where you can order samples of devicesbull MPLAB Data Visualizer - MPLAB Data Visualizer is a program used for processing and visualizing data The
Data Visualizer can receive data from various sources such as serial ports and on-board debuggerrsquos DataGateway Interface as found on Curiosity Nano and Xplained Pro boards
AVR128DA48 Curiosity NanoGetting Started
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 5
bull Studio Data Visualizer - Studio Data Visualizer is a program used for processing and visualizing data TheData Visualizer can receive data from various sources such as serial ports on-board debuggerrsquos Data GatewayInterface as found on Curiosity Nano and Xplained Pro boards and power data from the Power Debugger
bull Microchip PICreg and AVR Examples - Microchip PIC and AVR Device Examples is a collection of examplesand labs that use Microchip development boards to showcase the use of PIC and AVR device peripherals
bull Microchip PICreg and AVR Solutions - Microchip PIC and AVR Device Solutions contains complete applicationsfor use with Microchip development boards ready to be adapted and extended
bull AVR128DA48 Curiosity Nano website - Kit information latest user guide and design documentationbull AVR128DA48 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT
AVR128DA48 Curiosity NanoGetting Started
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 6
3 Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers IOs Theplatform consists of a series of low pin count microcontroller (MCU) boards with on-board debuggers which areintegrated with Atmel StudioMicrochip MPLABreg X IDE Each board is identified in the IDE When plugged in a KitWindow is displayed with links to key documentation including relevant user guides application notes data sheetsand example code Everything is easy to find The on-board debugger features a virtual serial port (CDC) for serialcommunication to a host PC and a Data Gateway Interface (DGI) with debug GPIO pin(s)
31 On-Board Debugger OverviewAVR128DA48 Curiosity Nano contains an on-board debugger for programming and debugging The on-boarddebugger is a composite USB device consisting of several interfaces
bull A debugger that can program and debug the AVR128DA48 in Atmel StudioMicrochip MPLABreg X IDEbull A mass storage device that allows drag-and-drop programming of the AVR128DA48bull A virtual serial port (CDC) that is connected to a Universal Asynchronous ReceiverTransmitter (UART) on the
AVR128DA48 and provides an easy way to communicate with the target application through terminal softwarebull A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize
program flow
The on-board debugger controls a Power and Status LED (marked PS) on the AVR128DA48 Curiosity Nano BoardThe table below shows how the LED is controlled in different operation modes
Table 3-1 On-Board Debugger LED Control
Operation Mode Power and Status LED
Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator The LED blinks slowly during programmingdebugging
Drag-and-dropprogramming Success The LED blinks slowly for 2 sec
Failure The LED blinks rapidly for 2 sec
Fault The LED blinks rapidly if a power fault is detected
SleepOff The LED is OFF The on-board debugger is either in a sleep mode or powered downThis can occur if the board is externally powered
Info Slow blinking is approximately 1 Hz and rapid blinking is approximately 5 Hz
311 DebuggerThe on-board debugger on the AVR128DA48 Curiosity Nano Board appears as a Human Interface Device (HID) onthe host computerrsquos USB subsystem The debugger supports full-featured programming and debugging of theAVR128DA48 using Atmel StudioMicrochip MPLABreg X IDE as well as some third-party IDEs
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 7
Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
AVR128DA48 Curiosity NanoCuriosity Nano
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Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
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Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
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Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
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Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
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4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
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Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
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Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
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5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
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bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
2 Getting Started
21 Quick StartSteps to start exploring the AVR128DA48 Curiosity Nano Board
1 Download Atmel StudioMicrochip MPLABreg X IDE2 Launch Atmel StudioMicrochip MPLABreg X IDE3 Optional Use MPLABreg Code Configurator or Atmel START to generate drivers and examples4 Write your application code5 Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB port on the
board
Driver InstallationWhen the board is connected to your computer for the first time the operating system will perform a driver softwareinstallation The driver file supports both 32- and 64-bit versions of Microsoftreg Windowsreg XP Windows VistaregWindows 7 Windows 8 and Windows 10 The drivers for the board are included with Atmel StudioMicrochipMPLABreg X IDE
Kit WindowOnce the board is powered the green status LED will be lit and Atmel StudioMicrochip MPLABreg X IDE will auto-detect which boards are connected Atmel StudioMicrochip MPLABreg X IDE will present relevant information like datasheets and board documentation The AVR128DA48 device on the AVR128DA48 Curiosity Nano Board isprogrammed and debugged by the on-board debugger and therefore no external programmer or debugger tool isrequired
Tip The Kit Window can be opened in MPLAB X IDE through the menu bar Window gt Kit Window
22 Design Documentation and Relevant LinksThe following list contains links to the most relevant documents and software for the AVR128DA48 Curiosity NanoBoard
bull MPLABreg X IDE - MPLAB X IDE is a software program that runs on a PC (Windowsreg Mac OSreg Linuxreg) todevelop applications for Microchip microcontrollers and digital signal controllers It is called an IntegratedDevelopment Environment (IDE) because it provides a single integrated ldquoenvironmentrdquo to develop code forembedded microcontrollers
bull Atmel Studio - Free IDE for the development of CC++ and assembler code for microcontrollersbull IAR Embedded Workbenchreg for AVRreg - This is a commercial CC++ compiler that is available for AVR
microcontrollers There is a 30-day evaluation version as well as a 4 KB code-size-limited kick-start versionavailable from their website
bull MPLABreg Code Configurator - MPLAB Code Configurator (MCC) is a free software plug-in that provides agraphical interface to configure peripherals and functions specific to your application
bull Atmel START - Atmel START is an online tool that hosts code examples helps the user to select and configuresoftware components and tailor your embedded application in a usable and optimized manner
bull Microchip Sample Store - Microchip sample store where you can order samples of devicesbull MPLAB Data Visualizer - MPLAB Data Visualizer is a program used for processing and visualizing data The
Data Visualizer can receive data from various sources such as serial ports and on-board debuggerrsquos DataGateway Interface as found on Curiosity Nano and Xplained Pro boards
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bull Studio Data Visualizer - Studio Data Visualizer is a program used for processing and visualizing data TheData Visualizer can receive data from various sources such as serial ports on-board debuggerrsquos Data GatewayInterface as found on Curiosity Nano and Xplained Pro boards and power data from the Power Debugger
bull Microchip PICreg and AVR Examples - Microchip PIC and AVR Device Examples is a collection of examplesand labs that use Microchip development boards to showcase the use of PIC and AVR device peripherals
bull Microchip PICreg and AVR Solutions - Microchip PIC and AVR Device Solutions contains complete applicationsfor use with Microchip development boards ready to be adapted and extended
bull AVR128DA48 Curiosity Nano website - Kit information latest user guide and design documentationbull AVR128DA48 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT
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3 Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers IOs Theplatform consists of a series of low pin count microcontroller (MCU) boards with on-board debuggers which areintegrated with Atmel StudioMicrochip MPLABreg X IDE Each board is identified in the IDE When plugged in a KitWindow is displayed with links to key documentation including relevant user guides application notes data sheetsand example code Everything is easy to find The on-board debugger features a virtual serial port (CDC) for serialcommunication to a host PC and a Data Gateway Interface (DGI) with debug GPIO pin(s)
31 On-Board Debugger OverviewAVR128DA48 Curiosity Nano contains an on-board debugger for programming and debugging The on-boarddebugger is a composite USB device consisting of several interfaces
bull A debugger that can program and debug the AVR128DA48 in Atmel StudioMicrochip MPLABreg X IDEbull A mass storage device that allows drag-and-drop programming of the AVR128DA48bull A virtual serial port (CDC) that is connected to a Universal Asynchronous ReceiverTransmitter (UART) on the
AVR128DA48 and provides an easy way to communicate with the target application through terminal softwarebull A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize
program flow
The on-board debugger controls a Power and Status LED (marked PS) on the AVR128DA48 Curiosity Nano BoardThe table below shows how the LED is controlled in different operation modes
Table 3-1 On-Board Debugger LED Control
Operation Mode Power and Status LED
Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator The LED blinks slowly during programmingdebugging
Drag-and-dropprogramming Success The LED blinks slowly for 2 sec
Failure The LED blinks rapidly for 2 sec
Fault The LED blinks rapidly if a power fault is detected
SleepOff The LED is OFF The on-board debugger is either in a sleep mode or powered downThis can occur if the board is externally powered
Info Slow blinking is approximately 1 Hz and rapid blinking is approximately 5 Hz
311 DebuggerThe on-board debugger on the AVR128DA48 Curiosity Nano Board appears as a Human Interface Device (HID) onthe host computerrsquos USB subsystem The debugger supports full-featured programming and debugging of theAVR128DA48 using Atmel StudioMicrochip MPLABreg X IDE as well as some third-party IDEs
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Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
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Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
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Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
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Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
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your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
bull Studio Data Visualizer - Studio Data Visualizer is a program used for processing and visualizing data TheData Visualizer can receive data from various sources such as serial ports on-board debuggerrsquos Data GatewayInterface as found on Curiosity Nano and Xplained Pro boards and power data from the Power Debugger
bull Microchip PICreg and AVR Examples - Microchip PIC and AVR Device Examples is a collection of examplesand labs that use Microchip development boards to showcase the use of PIC and AVR device peripherals
bull Microchip PICreg and AVR Solutions - Microchip PIC and AVR Device Solutions contains complete applicationsfor use with Microchip development boards ready to be adapted and extended
bull AVR128DA48 Curiosity Nano website - Kit information latest user guide and design documentationbull AVR128DA48 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT
AVR128DA48 Curiosity NanoGetting Started
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 6
3 Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers IOs Theplatform consists of a series of low pin count microcontroller (MCU) boards with on-board debuggers which areintegrated with Atmel StudioMicrochip MPLABreg X IDE Each board is identified in the IDE When plugged in a KitWindow is displayed with links to key documentation including relevant user guides application notes data sheetsand example code Everything is easy to find The on-board debugger features a virtual serial port (CDC) for serialcommunication to a host PC and a Data Gateway Interface (DGI) with debug GPIO pin(s)
31 On-Board Debugger OverviewAVR128DA48 Curiosity Nano contains an on-board debugger for programming and debugging The on-boarddebugger is a composite USB device consisting of several interfaces
bull A debugger that can program and debug the AVR128DA48 in Atmel StudioMicrochip MPLABreg X IDEbull A mass storage device that allows drag-and-drop programming of the AVR128DA48bull A virtual serial port (CDC) that is connected to a Universal Asynchronous ReceiverTransmitter (UART) on the
AVR128DA48 and provides an easy way to communicate with the target application through terminal softwarebull A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize
program flow
The on-board debugger controls a Power and Status LED (marked PS) on the AVR128DA48 Curiosity Nano BoardThe table below shows how the LED is controlled in different operation modes
Table 3-1 On-Board Debugger LED Control
Operation Mode Power and Status LED
Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator The LED blinks slowly during programmingdebugging
Drag-and-dropprogramming Success The LED blinks slowly for 2 sec
Failure The LED blinks rapidly for 2 sec
Fault The LED blinks rapidly if a power fault is detected
SleepOff The LED is OFF The on-board debugger is either in a sleep mode or powered downThis can occur if the board is externally powered
Info Slow blinking is approximately 1 Hz and rapid blinking is approximately 5 Hz
311 DebuggerThe on-board debugger on the AVR128DA48 Curiosity Nano Board appears as a Human Interface Device (HID) onthe host computerrsquos USB subsystem The debugger supports full-featured programming and debugging of theAVR128DA48 using Atmel StudioMicrochip MPLABreg X IDE as well as some third-party IDEs
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Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
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Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 13
Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 14
Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
AVR128DA48 Curiosity NanoCuriosity Nano
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
AVR128DA48 Curiosity NanoCuriosity Nano
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
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copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
3 Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers IOs Theplatform consists of a series of low pin count microcontroller (MCU) boards with on-board debuggers which areintegrated with Atmel StudioMicrochip MPLABreg X IDE Each board is identified in the IDE When plugged in a KitWindow is displayed with links to key documentation including relevant user guides application notes data sheetsand example code Everything is easy to find The on-board debugger features a virtual serial port (CDC) for serialcommunication to a host PC and a Data Gateway Interface (DGI) with debug GPIO pin(s)
31 On-Board Debugger OverviewAVR128DA48 Curiosity Nano contains an on-board debugger for programming and debugging The on-boarddebugger is a composite USB device consisting of several interfaces
bull A debugger that can program and debug the AVR128DA48 in Atmel StudioMicrochip MPLABreg X IDEbull A mass storage device that allows drag-and-drop programming of the AVR128DA48bull A virtual serial port (CDC) that is connected to a Universal Asynchronous ReceiverTransmitter (UART) on the
AVR128DA48 and provides an easy way to communicate with the target application through terminal softwarebull A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize
program flow
The on-board debugger controls a Power and Status LED (marked PS) on the AVR128DA48 Curiosity Nano BoardThe table below shows how the LED is controlled in different operation modes
Table 3-1 On-Board Debugger LED Control
Operation Mode Power and Status LED
Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator The LED blinks slowly during programmingdebugging
Drag-and-dropprogramming Success The LED blinks slowly for 2 sec
Failure The LED blinks rapidly for 2 sec
Fault The LED blinks rapidly if a power fault is detected
SleepOff The LED is OFF The on-board debugger is either in a sleep mode or powered downThis can occur if the board is externally powered
Info Slow blinking is approximately 1 Hz and rapid blinking is approximately 5 Hz
311 DebuggerThe on-board debugger on the AVR128DA48 Curiosity Nano Board appears as a Human Interface Device (HID) onthe host computerrsquos USB subsystem The debugger supports full-featured programming and debugging of theAVR128DA48 using Atmel StudioMicrochip MPLABreg X IDE as well as some third-party IDEs
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 7
Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 8
Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
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Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
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Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
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Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
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4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
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Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
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tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Remember Keep the debuggerrsquos firmware up-to-date Firmware upgrades are done automatically whenusing Atmel StudioMicrochip MPLABreg X IDE
312 Virtual Serial Port (CDC)The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device
3121 OverviewThe on-board debugger implements a composite USB device that includes a standard Communications Device Class(CDC) interface which appears on the host as a virtual serial port The CDC can be used to stream arbitrary data inboth directions between the host computer and the target All characters sent through the virtual serial port on thehost computer will be transmitted as UART on the debuggerrsquos CDC TX pin and UART characters captured on thedebuggerrsquos CDC RX pin will be returned to the host computer through the virtual serial port
Figure 3-1 CDC Connection
Target MCU
UART TX
UART RX
Debugger
USBCDC RX
CDC TX
PCTerminalSoftware
TargetReceive
TargetSend
TerminalReceive
TerminalSend
Info As shown in Figure 3-1 the debuggerrsquos CDC TX pin is connected to a UART RX pin on the targetfor receiving characters from the host computer Similarly the debuggerrsquos CDC RX pin is connected to aUART TX pin on the target for transmitting characters to the host computer
3122 Operating System SupportOn Windows machines the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of theWindows Device Manager The COM port number can also be found there
Info On older Windows systems a USB driver is required for CDC This driver is included in installationsof Atmel StudioMicrochip MPLABreg X IDE
On Linux machines the CDC will enumerate and appear as devttyACM
Info tty devices belong to the ldquodialoutrdquo group in Linux so it may be necessary to become a member ofthat group to have permissions to access the CDC
On MAC machines the CDC will enumerate and appear as devttyusbmodem Depending on which terminalprogram is used it will appear in the available list of modems as usbmodem
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Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
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Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
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your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
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Worldwide Sales and Service
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- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Info For all operating systems Be sure to use a terminal emulator that supports DTR signaling See 3124 Signaling
3123 LimitationsNot all UART features are implemented in the on-board debugger CDC The constraints are outlined here
bull Baud rate Must be in the range of 1200 bps to 500 kbps Any baud rate outside this range will be set to theclosest limit without warning Baud rate can be changed on-the-fly
bull Character format Only 8-bit characters are supportedbull Parity Can be odd even or nonebull Hardware flow control Not supportedbull Stop bits One or two bits are supported
3124 SignalingDuring USB enumeration the host OS will start both communication and data pipes of the CDC interface At thispoint it is possible to set and read back the baud rate and other UART parameters of the CDC but data sending andreceiving will not be enabled
When a terminal connects on the host it must assert the DTR signal As this is a virtual control signal implementedon the USB interface it is not physically present on the board Asserting the DTR signal from the host will indicate tothe on-board debugger that a CDC session is active The debugger will then enable its level shifters (if available) andstart the CDC data send and receive mechanisms
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further data will bestreamed to the host Data packets that are already queued up for sending to the target will continue to be sent outbut no further data will be accepted
Remember Set up the terminal emulator to assert the DTR signal Without the signal the on-boarddebugger will not send or receive any data through its UART
Tip The on-board debuggerrsquos CDC TX pin will not be driven until the CDC interface is enabled by thehost computer Also there are no external pull-up resistors on the CDC lines connecting the debugger andthe target which means that during power-up these lines are floating To avoid any glitches resulting inunpredictable behavior like framing errors the target device should enable the internal pull-up resistor onthe pin connected to the debuggerrsquos CDC TX pin
3125 Advanced Use
CDC Override ModeIn normal operation the on-board debugger is a true UART bridge between the host and the device However incertain use cases the on-board debugger can override the basic operating mode and use the CDC TX and RX pinsfor other purposes
Dropping a text file into the on-board debuggerrsquos mass storage drive can be used to send characters out of thedebuggerrsquos CDC TX pin The filename and extension are trivial but the text file must start with the charactersCMDSEND_UART=
The maximum message length is 50 characters ndash all remaining data in the frame are ignored
The default baud rate used in this mode is 9600 bps but if the CDC is already active or has been configured thepreviously used baud rate still applies
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USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 18
To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
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Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
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your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks which will be chunked into 64-byte USBframes Each such frame will be queued up for sending to the debuggerrsquos CDC TX pin Transferring a small amountof data per frame can be inefficient particularly at low baud rates because the on-board debugger buffers framesand not bytes A maximum of four 64-byte frames can be active at any time The on-board debugger will throttle theincoming frames accordingly Sending full 64-byte frames containing data is the most efficient method
When receiving data on the debuggerrsquos CDC RX pin the on-board debugger will queue up the incoming bytes into64-byte frames which are sent to the USB queue for transmission to the host when they are full Incomplete framesare also pushed to the USB queue at approximately 100 ms intervals triggered by USB start-of-frame tokens Up toeight 64-byte frames can be active at any time
If the host (or the software running on it) fails to receive data fast enough an overrun will occur When this happensthe last-filled buffer frame will be recycled instead of being sent to the USB queue and a full frame of data will belost To prevent this occurrence the user must ensure that the CDC data pipe is being read continuously or theincoming data rate must be reduced
313 Mass Storage DeviceThe on-board debugger includes a simple Mass Storage Device implementation which is accessible for readwriteoperations via the host operating system to which it is connected
It providesbull Read access to basic text and HTML files for detailed kit information and supportbull Write access for programming Intelreg HEX formatted files into the target devicersquos memorybull Write access for simple text files for utility purposes
3131 Mass Storage Device ImplementationThe on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitationspartly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not in any wayfulfill the expectations of a general purpose mass storage device This behavior is intentional
When using the Windows operating system the on-board debugger enumerates as a Curiosity Nano USB Devicethat can be found in the disk drives section of the device manager The CURIOSITY drive appears in the file managerand claims the next available drive letter in the system
The CURIOSITY drive contains approximately one MB of free space This does not reflect the size of the targetdevicersquos Flash in any way When programming an Intelreg HEX file the binary data are encoded in ASCII withmetadata providing a large overhead so one MB is a trivially chosen value for disk size
It is not possible to format the CURIOSITY drive When programming a file to the target the filename may appear inthe disk directory listing This is merely the operating systemrsquos view of the directory which in reality has not beenupdated It is not possible to read out the file contents Removing and replugging the board will return the file systemto its original state but the target will still contain the application that has been previously programmed
To erase the target device copy a text file starting with ldquoCMDERASErdquo onto the disk
By default the CURIOSITY drive contains several read-only files for generating icons as well as reporting status andlinking to further information
bull AUTORUNICO ndash icon file for the Microchip logobull AUTORUNINF ndash system file required for Windows Explorer to show the icon filebull KIT-INFOHTM ndash redirect to the development board websitebull KIT-INFOTXT ndash a text file containing details about the boardrsquos debugger firmware version board name USB
serial number device and drag-and-drop supportbull STATUSTXT ndash a text file containing the programming status of the board
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Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
AVR128DA48 Curiosity NanoCuriosity Nano
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
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copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Info STATUSTXT is dynamically updated by the on-board debugger The contents may be cached bythe OS and therefore do not reflect the correct status
3132 Fuse Bytes
Fuse Bytes (AVRreg MCU Targets)When doing drag-and-drop programming the debugger masks out fuse bits that attempt to disable Unified Programand Debug Interface (UPDI) This means that the UPDI pin cannot be used in its reset or GPIO modes selecting oneof the alternative functions on the UPDI pin would render the device inaccessible without using an external debuggercapable of high-voltage UPDI activation
3133 Limitations of Drag-and-Drop Programming
Lock BitsLock bits included in the hex file will be ignored when using drag-and-drop programming To program lock bits useAtmel StudioMicrochip MPLABreg X IDE
Enabling CRC Check in FusesIt is not advisable to enable the CRC check in the target devicersquos fuses when using drag-and-drop programming Thisbecause a subsequent chip erase (which does not affect fuse bits) will effect a CRC mismatch and the applicationwill fail to boot To recover a target from this state a chip erase must be done using Atmel StudioMicrochip MPLABreg
X IDE which will automatically clear the CRC fuses after erasing
3134 Special CommandsSeveral utility commands are supported by copying text files to the mass storage disk The filename or extension isirrelevant ndash the command handler reacts to content only
Table 3-2 Special File Commands
Command Content Description
CMDERASE Executes a chip erase of the target
CMDSEND_UART= Sends a string of characters to the CDC UART See ldquoCDC Override Moderdquo
CMDRESET Resets the target device by entering Programming mode and then exitingProgramming mode immediately thereafter Exact timing can vary according tothe programming interface of the target device (Debugger firmware v116 ornewer)
CMDPOWERTOGGLE Powers down the target and restores power after a 100 ms delay If externalpower is provided this has no effect (Debugger firmware v116 or newer)
CMD0V Powers down the target device by disabling the target supply regulator Ifexternal power is provided this has no effect (Debugger firmware v116 ornewer)
CMD3V3 Sets the target voltage to 33V If external power is provided this has no effect(Debugger firmware v116 or newer)
CMD5V0 Sets the target voltage to 50V If external power is provided this has no effect(Debugger firmware v116 or newer)
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copy 2020 Microchip Technology Inc User Guide DS50002971A-page 11
Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 13
Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 14
Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 15
Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 16
Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
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copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
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Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
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Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
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bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
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To register go to httpwwwmicrochipcompcn and follow the registration instructions
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bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
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your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Info The commands listed here are triggered by the content being sent to the mass storage emulateddisk and no feedback is provided in the case of either success or failure
314 Data Gateway Interface (DGI)Data Gateway Interface (DGI) is a USB interface for transporting raw and timestamped data between on-boarddebuggers and host computer-based visualization tools MPLAB Data Visualizer is used on the host computer todisplay debug GPIO data It is available as a plug-in for MPLABreg X IDE or a stand-alone application that can be usedin parallel with Atmel StudioMicrochip MPLABreg X IDE
Although DGI encompasses several physical data interfaces the AVR128DA48 Curiosity Nano implementationincludes logic analyzer channels
bull Two debug GPIO channels (also known as DGI GPIO)
3141 Debug GPIODebug GPIO channels are timestamped digital signal lines connecting the target application to a host computervisualization application They are typically used to plot the occurrence of low-frequency events on a time-axis ndash forexample when certain application state transitions occur
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO inMPLAB Data VisualizerFigure 3-2 Monitoring Debug GPIO with MPLABreg Data Visualizer
Debug GPIO channels are timestamped so the resolution of DGI GPIO events is determined by the resolution of theDGI timestamp module
Important Although bursts of higher-frequency signals can be captured the useful frequency range ofsignals for which debug GPIO can be used is up to about 2 kHz Attempting to capture signals above thisfrequency will result in data saturation and overflow which may cause the DGI session to be aborted
3142 TimestampingDGI sources are timestamped as they are captured by the debugger The timestamp counter implemented in theCuriosity Nano debugger increments at 2 MHz frequency providing a timestamp resolution of a half microsecond
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32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 14
Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 16
Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 18
To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
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Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
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Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
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your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
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Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
32 Curiosity Nano Standard PinoutThe 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout Theprogramdebug pins have different functions depending on the target programming interface as shown in the tableand figure below
Table 3-3 Curiosity Nano Standard Pinout
Debugger Signal Target MCU Description
ID mdash ID line for extensions
CDC TX UART RX USB CDC TX line
CDC RX UART TX USB CDC RX line
DBG0 UPDI Debug data line
DBG1 GPIO1 debug GPIO1
DBG2 GPIO0 debug GPIO0
DBG3 RESET Reset line
NC mdash No connect
VBUS mdash VBUS voltage for external use
VOFF mdash Voltage Off input Disables the target regulator andtarget voltage when pulled low
VTG mdash Target voltage
GND mdash Common ground
Figure 3-3 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
33 Power SupplyThe board is powered through the USB port and contains two LDO regulators one to generate 33V for the on-boarddebugger and an adjustable LDO regulator for the target microcontroller AVR128DA48 and its peripherals Thevoltage from the USB connector can vary between 44V to 525V (according to the USB specification) and will limitthe maximum voltage to the target The figure below shows the entire power supply system on AVR128DA48Curiosity Nano
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
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Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
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AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 3-4 Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3DEBUGGER
Power converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
IO IO GPIOstraps
IO
OnOffMeasure OnOff
ID systemVOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
331 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO The on-board debugger can adjust the voltage outputsupplied to the board target section by manipulating the MIC5353rsquos feedback voltage The hardware implementationis limited to an approximate voltage range from 17V to 51V Additional output voltage limits are configured in thedebugger firmware to ensure that the output voltage never exceeds the hardware limits of the AVR128DA48microcontroller The voltage limits configured in the on-board debugger on AVR128DA48 Curiosity Nano are18-51V
Info The target voltage is set to 33V when the board is manufactured It can be changed throughMPLAB X IDE project properties and in the Atmel Studio device programming dialog Any change to thetarget voltage is persistent even through a power toggle The resolution is less than 5 mV but may belimited to 10 mV by the adjustment program
Info Voltage settings that are set up in Atmel StudioMicrochip MPLABreg X IDE are not immediatelyapplied to the board The new voltage setting is applied to the board when the debugger is accessed inany way like pushing the Refresh Debug Tool Status button in the project dashboard tab or programmingreading program memory
Info There is a simple option to adjust the target voltage with a drag and drop command text file to theboard This only supports settings of 00V 33V and 50V See section 3134 Special Commands forfurther details
The MIC5353 supports a maximum current load of 500 mA It is an LDO regulator in a small package placed on asmall printed circuit board (PCB) and the thermal shutdown condition can be reached at lower loads than 500 mAThe maximum current load depends on the input voltage the selected output voltage and the ambient temperatureThe figure below shows the safe operating area for the regulator with an input voltage of 51V and an ambienttemperature of 23degC
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Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
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Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
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Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
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Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
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Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
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4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
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Worldwide Sales and Service
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- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 3-5 Target Regulator Safe Operation Area
The voltage output of the target regulator is continuously monitored (measured) by the on-board debugger If it ismore than 100 mV overunder the voltage setting value an error condition will be flagged and the target voltageregulator will be turned off This will detect and handle any short-circuit conditions It will also detect and handle if anexternal voltage which causes VCC_TARGET to move outside of the voltage setting monitoring window of plusmn100 mVis suddenly applied to the VTG pin without setting the VOFF pin low
Info If the external voltage is lower than the monitoring window lower limit (target voltage setting - 100mV) the on-board debugger status LED will blink rapidly If the external voltage is higher than themonitoring window upper limit (target voltage setting + 100 mV) the on-board debugger status LED willcontinue to shine If the external voltage is removed the status LED will start to blink rapidly until the on-board debugger detects the new situation and turns the target voltage regulator back on
332 External SupplyAVR128DA48 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator Whenthe Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulatorand it is safe to apply an external voltage to the VTG pin
It is also safe to apply an external voltage to the VTG pin when no USB cable is plugged into the DEBUG connectoron the board
The VOFF pin can be tied lowlet go at any time This will be detected by a pin-change interrupt to the on-boarddebugger which controls the target voltage regulator accordingly
WARNINGApplying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damageto the board
WARNINGDo not apply any voltage to the VOFF pin Let the pin float to enable the power supply
WARNINGAbsolute maximum external voltage is 55V for the on-board level shifters and the standard operatingcondition of the AVR128DA48 is 18-55V Applying a higher voltage may cause permanent damage to theboard
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 15
Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
AVR128DA48 Curiosity NanoCuriosity Nano
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Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Info If an external voltage is applied without pulling the VOFF pin low and an external supply pulls thevoltage lower than the monitoring window lower limit (target voltage setting - 100 mV) the on-boarddebugger status LED will blink rapidly and shut the on-board regulator off If an external voltage issuddenly removed when the VOFF pin is not pulled low the status LED will start to blink rapidly until theon-board debugger detects the new situation and switches the target voltage regulator back on
Programming debugging and data streaming is still possible with an external power supply ndash the debugger andsignal level shifters will be powered from the USB cable Both regulators the debugger and the level shifters arepowered down when the USB cable is removed
Info In addition to the power consumed by the AVR128DA48 and its peripherals approximately 100 microAwill be drawn from any external power source to power the on-board level shifters and voltage monitorcircuitry when a USB cable is plugged in the DEBUG connector on the board When a USB cable is notplugged in some current is used to supply the level shifters voltage pins which have a worst-case currentconsumption of approximately 5 microA Typical values may be as low as 100 nA
333 VBUS Output PinAVR128DA48 Curiosity Nano has a VBUS output pin that can be used to power external components that need a 5Vsupply The VBUS output pin has a PTC fuse to protect the USB against short circuits A side effect of the PTC fuseis a voltage drop on the VBUS output with higher current loads The chart below shows the voltage versus the currentload of the VBUS output
Figure 3-6 VBUS Output Voltage vs Current
334 Power Supply ExceptionsThis is a summary of most exceptions that can occur with the power supply
Target Voltage Shuts DownThis can happen if the target section draws too much current at a given voltage This will cause the thermal shutdownsafety feature of the MIC5353 regulator to kick in To avoid this reduce the current load of the target section
Target Voltage Setting is Not ReachedThe maximum output voltage is limited by the USB input voltage (specified to be between 44V to 525V) and thevoltage drop over the MIC5353 regulator at a given voltage setting and current consumption If a higher outputvoltage is needed use a USB power source that can provide a higher input voltage or use an external voltage supplyon the VTG pin
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 16
Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
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To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
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Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
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copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
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102
320
19AV
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PB Shee
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neer
A
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F
A08
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23
Size
A3
A09
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03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Target Voltage is Different From SettingThis can be caused by an externally applied voltage to the VTG pin without setting the VOFF pin low If the targetvoltage differ more than 100 mV overunder the voltage setting it will be detected by the on-board debugger and theinternal voltage regulator will be shut down To fix this issue remove the applied voltage from the VTG pin and theon-board debugger will enable the on-board voltage regulator when the new condition is detected Note that the PSLED will be blinking rapidly if the target voltage is below 100 mV of the setting but will be lit normally when it is higherthan 100 mV above the setting
No Or Very Low Target Voltage and PS LED is Blinking RapidlyThis can be caused by a full or partial short-circuit and is really a special case of the issue mentioned above Removethe short-circuit and the on-board debugger will re-enable the on-board target voltage regulator
No Target Voltage and PS LED is Lit 1This occurs if the target voltage is set to 00V To fix this set the target voltage to a value within the specified voltagerange for the target device
No Target Voltage and PS LED is Lit 2This can be the issue if power jumper J100 andor J101 is cut and the target voltage regulator is set to a value withinthe specified voltage range for the target device To fix this solder a wirebridge between the pads for J100J101 oradd a jumper on J101 if a pin header is mounted
VBUS Output Voltage is Low or Not PresentThis is most lightly caused by a high-current drain on VBUS and the protection fuse (PTC) will reduce the current orcut off completely Reduce the current consumption on the VBUS pin to fix this issue
34 Low Power MeasurementPower to the AVR128DA48 is connected from the on-board power supply and VTG pin through a 100 mil pin headermarked with ldquoPOWERrdquo in silkscreen (J101) To measure the power consumption of the AVR128DA48 and otherperipherals connected to the board cut the Target Power strap and connect an ammeter over the strap
To measure the lowest possible power consumption follow these steps1 Cut the POWER strap with a sharp tool2 Solder a 1x2 100 mil pin header in the footprint3 Connect an ammeter to the pin header4 Write firmware that
41 Tri-states any IO connected to the on-board debugger42 Sets the microcontroller in its lowest power Sleep state
5 Program the firmware into the AVR128DA48
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 17
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 18
To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
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Worldwide Sales and Service
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- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 3-7 Target Power Strap
Target Power strap (top side)
Tip A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter Once the ammeter is no longer needed place a jumper cap on the pin header
Info The on-board level shifters will draw a small amount of current even when they are not in use Amaximum of 2 microA can be drawn from each IO pin connected to a level shifter for a total of 10 microA Keepany IO pin connected to a level shifter are tri-state to prevent leakage All IOs connected to the on-boarddebugger are listed in 4241 On-Board Debugger Connections To prevent any leakage to the on-boardlevel shifters they can be disconnected completely as described in 74 Disconnecting the On-boardDebugger
35 Programming External MicrocontrollersThe on-board debugger on AVR128DA48 Curiosity Nano can be used to program and debug microcontrollers onexternal hardware
351 Supported DevicesAll external AVR microcontrollers with the UPDI interface can be programmed and debugged with the on-boarddebugger with Atmel Studio
External SAM microcontrollers that have a Curiosity Nano Board can be programmed and debugged with the on-board debugger with Atmel Studio
AVR128DA48 Curiosity Nano can program and debug external AVR128DA48 microcontrollers with MPLAB X IDE
352 Software ConfigurationNo software configuration is required to program and debug the same device that is mounted on the board
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 18
To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
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o_Ta
rget
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Sch
Doc
Proj
ect T
itle
PCB
Ass
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y N
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BA R
evisi
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File
PC
B N
umbe
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B Re
visio
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Des
igne
d wi
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Dra
wn
By
PB Shee
t Titl
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rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
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To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
To program and debug a different microcontroller than what is mounted on the board Atmel Studio must beconfigured to allow free selection of devices and programming interfaces
1 Navigate to Tools gt Options through the menu system at the top of the application2 Select the Tools gt Tool settings category in the options window3 Set the Hide unsupported devices option to False
Figure 3-8 Hide Unsupported Devices
Info Atmel Studio allows any microcontroller and interface to be selected when Hide unsupporteddevices is set to False also microcontrollers and interfaces which are not supported by the on-boarddebugger
353 Hardware ModificationsThe on-board debugger is connected to the AVR128DA48 by default These connections must be removed beforeany external microcontroller can be programmed or debugged Cut the GPIO straps shown in the figure below with asharp tool to disconnect the AVR128DA48 from the on-board debugger
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 19
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
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To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 3-9 Programming and Debugging Connections to Debugger
GPIO straps (bottom side)
Info Cutting the connections to the debugger will disable programming debugging and data streamingfrom the AVR128DA48 mounted on the board
Tip Solder in 0Ω resistors across the footprints or short-circuit them with solder to reconnect the signalsbetween the on-board debugger and the AVR128DA48
354 Connecting to External MicrocontrollersThe figure and table below show where the programming and debugging signals must be connected to program anddebug external microcontrollers The on-board debugger can supply power to the external hardware or use anexternal voltage as a reference for its level shifters Read more about the power supply in 33 Power Supply
The on-board debugger and level shifters actively drive data and clock signals (DBG0 DBG1 and DBG2) used forprogramming and debugging and in most cases the external resistor on these signals can be ignored Pull-downresistors are required on the ICSPtrade data and clock signals to debug PICreg microcontrollers
DBG3 is an open-drain connection and requires a pull-up resistor to function
AVR128DA48 Curiosity Nano has a pull-up resistor R200 connected to its RESET signal (DBG3) The location ofthe pull-up resistor is shown in the 72 Assembly Drawing in the appendix
Remember bull Connect GND and VTG to the external microcontrollerbull Tie the VOFF pin to GND if the external hardware has its own power supplybull Make sure there are pull-down resistors on the ICSP data and clock signals (DBG0 and DBG1) to
support the debugging of PIC microcontrollers
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 20
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 3-10 Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
Table 3-4 Programming and Debugging Interfaces
Curiosity Nano Pin UPDI ICSPtrade SWD
DBG0 UPDI DATA SWDIO
DBG1 - CLK SWCLK
DBG2 - - -
DBG3 - MCLR RESET
36 Connecting External DebuggersEven though there is an on-board debugger external debuggers can be connected directly to the AVR128DA48Curiosity Nano to programdebug the AVR128DA48 The on-board debugger keeps all the pins connected to theAVR128DA48 and board edge in tri-state when not actively used Therefore the on-board debugger will not interferewith any external debug tools
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 21
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
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Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 3-11 Connecting the MPLABreg PICkittrade 4 In-Circuit DebuggerProgrammer to AVR128DA48 CuriosityNano
2345678 1
VDD GroundDATA
2 = VDD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
MPLABreg PICkittrade 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 22
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 3-12 Connecting the Atmel-ICE to AVR128DA48 Curiosity Nano
VDD Ground
DATA
AVRregSAM
3 = UPDI
4 = VTG
5 = Unused
6 = Unused
7 = Unused
8 = Unused
1 = Unused
2 = GND
9 = Unused
10 = Unused
Atmel-ICE
21 9
10
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTIONTo avoid contention between the external debugger and the on-board debugger do not start anyprogrammingdebug operation with the on-board debugger through Atmel StudioMicrochip MPLABreg XIDE or mass storage programming while the external tool is active
AVR128DA48 Curiosity NanoCuriosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 23
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
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To register go to httpwwwmicrochipcompcn and follow the registration instructions
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
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Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
4 Hardware User Guide
41 Connectors
411 AVR128DA48 Curiosity Nano PinoutAll the AVR128DA48 IO pins are accessible at the edge connectors on the board The image below shows the boardpinout
Figure 4-1 AVR128DA48 Curiosity Nano Pinout
USB
DEBUGGER
AVR128DA48
SW0
LED0
PS LEDNC
NC
ID
ID
CDC RX
CDCRXUSART1 TXPC0
CDC TX
CDCTXUSART1 RXPC1
DBG1
DBG
1PC6LED0
DBG2
DBG
2PC7SW0
PA0
PA0USART0 TXPTC XY0
PA1PA
1USART0 RXPTC XY1
PC2PC2TWI0 SDA
PC3
PC3TWI0 SCL
PA4
PA4SPI0 MOSIPTC XY4
PA5
PA5SPI0 MISOPTC XY5
PA6
PA6SPI0 SCKPTC XY6
PA7
PA7SPI0 SSPTC XY7
GND
GN
D
PF4
PF4USART2 TXPTC XY36
PF5
PF5USART2 RXPTC XY37
PF2
PF2PTC XY34
PF3
PF3PTC XY35
PB0
PB0PTC XY8
PB1
PB1PTC XY9
PB2
PB2PTC XY10
PB3
PB3PTC XY11
GND
GN
D
PC0
PC0USART1 TXCDC RX
PC1
PC1USART1 RXCDC TX
PC6
PC6LED0
PC7
PC7SW0
VBUS
VBU
S
VOFF
VO
FFDBG3
DBG
3 PF6
DBG0D
BG0 UPDI
GND
GN
D
VTG
VTG
PD7
PD7 AIN7 PTC XY23
PD6
PD6 AIN6 PTC XY22
PD2
PD2 AIN2 PTC XY18 TCA0 WO2
PD1
PD1 AIN1 PTC XY17 TCA0 WO1
PD0
PD0 AIN0 PTC XY16 TCA0 WO0
PD5
PD5 AIN5 PTC XY21
PD4
PD4 AIN4 PTC XY20
PD3
PD3 AIN3 PTC XY19
GND
GN
D
PE3
PE3 PTC XY27
PE2
PE2 PTC XY26
PE1
PE1 PTC XY25
PE0
PE0 PTC XY24
PA3
PA3 PTC XY3
PA2
PA2 PTC XY2
PB5
PB5 PTC XY13
PB4
PB4 PTC XY12
GND
GN
D
PC5
PC5
PC4
PC4
(PF1)
(PF1) (PTC XY33) XTAL32K2
(PF0)
(PF0) (PTC XY32) XTAL32K1
DEBUGGERAVR128DA48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR128DA48Curiosity Nano
412 Using Pin HeadersThe edge connector footprint on AVR128DA48 Curiosity Nano has a staggered design where each hole is shifted 8mil (~02 mm) off-center The hole shift allows the use of regular 100 mil pin headers on the board without solderingOnce the pin headers are firmly in place they can be used in normal applications like pin sockets and prototypingboards without any issues
Tip Start at one end of the pin header and gradually insert the header along the length of the boardOnce all the pins are in place use a flat surface to push them in
Tip For applications where the pin headers will be used permanently it is still recommended to solderthem in place
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 24
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
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Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Important Once the pin headers are in place they are hard to remove by hand Use a set of pliers andcarefully remove the pin headers to avoid damage to the pin headers and PCB
42 Peripherals
421 LEDThere is one yellow user LED available on the AVR128DA48 Curiosity Nano Board that can be controlled by eitherGPIO or PWM The LED can be activated by driving the connected IO line to GND
Table 4-1 LED Connection
AVR128DA48 Pin Function Shared Functionality
PC6 Yellow LED0 Edge connector On-board debugger
422 Mechanical SwitchThe AVR128DA48 Curiosity Nano has one mechanical switch This is a generic user-configurable switch When theswitch is pressed it will drive the IO line to ground (GND)
Tip There is no externally connected pull-up resistor on the switch To use the switch make sure that aninternal pull-up resistor is enabled on pin PC7
Table 4-2 Mechanical Switch
AVR128DA48 Pin Description Shared Functionality
PC7 User switch (SW0) Edge connector On-board debugger
423 Crystal
The AVR128DA48 Curiosity Nano board has a 32768 kHz crystal mounted
The AVR128DA48 is connected to the crystal by default but the GPIOs are also routed to the edge connectorthrough two solder points The two IO lines routed to the edge connector are disconnected by default to reduce thechance of an external signal causing contention with the crystal and to remove excessive capacitance on the linesTo use PF0 and PF1 as GPIO some hardware modifications are required
bull Disconnect the crystal by cutting the two straps on the top side of the board next to the crystal (J210 J211) Thecrystal should be disconnected when using the pin as GPIO as this might harm the crystal
bull Connect the IO lines to the edge connector by placing solder blobs on the circular solder points marked PF0and PF1 on the bottom side of the board (J207 J208)
The cut straps and solder points can be seen in Figure 4-2
Table 4-3 Crystal Connections
AVR128DA48 Pin Function Shared Functionality
PF0 TOSC1 (Crystal input) Edge connector
PF1 TOSC2 (Crystal output) Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 25
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
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Size
A3
A09
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03
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D
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com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
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chD
oc
Proj
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PCB
Ass
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PC
B N
umbe
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B Re
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Des
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Dra
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By
PB Shee
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ebug
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Engi
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A
H T
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A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
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com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 4-2 Crystal Connection and Cut Straps
424 On-Board Debugger ImplementationAVR128DA48 Curiosity Nano features an on-board debugger that can be used to program and debug theAVR128DA48 using UPDI The on-board debugger also includes a virtual serial port (CDC) interface over UART anddebug GPIO Atmel StudioMicrochip MPLABreg X IDE can be used as a front-end for the on-board debugger forprogramming and debugging MPLAB Data Visualizer can be used as a front-end for the CDC and debug GPIO
4241 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section All connections between thetarget and the debugger are tri-stated as long as the debugger is not actively using the interface Hence since thereare little contaminations of the signals the pins can be configured to anything the user wants
For further information on how to use the capabilities of the on-board debugger see 31 On-Board DebuggerOverview
Table 4-4 On-Board Debugger Connections
AVR128DA48Pin
Debugger Pin Function Shared Functionality
RF1 CDC TX UART RX (AVR128DA48 RX line) Edge connector
RF0 CDC RX UART TX (AVR128DA48 TX line) Edge connector
UPDI DBG0 UPDI Edge connector
PC6 DBG1 GPIO1 Edge connector LED
PC7 DBG2 GPIO0 Edge connector Mechanical Switch
PF6 DBG3 RESET Edge connector
AVR128DA48 Curiosity NanoHardware User Guide
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 26
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
5 Hardware Revision History and Known IssuesThis user guide is written to provide information about the latest available revision of the board The followingsections contain information about known issues a revision history of older revisions and how older revisions differfrom the latest revision
51 Identifying Product ID and RevisionThe revision and product identifier of the AVR128DA48 Curiosity Nano Board can be found in two ways Either byutilizing the Atmel StudioMicrochip MPLABreg X IDE Kit Window or by looking at the sticker on the bottom side of thePCB
By connecting AVR128DA48 Curiosity Nano to a computer with Atmel StudioMicrochip MPLABreg X IDE running theKit Window will pop up The first six digits of the serial number which is listed under kit information contain theproduct identifier and revision
Tip The Kit Window can be opened in MPLABreg X IDE through the menu bar Window gt Kit Window
The same information can be found on the sticker on the bottom side of the PCB Most boards will have the identifierand revision printed in plain text as A09-nnnnrr where ldquonnnnrdquo is the identifier and ldquorrrdquo is the revision Boards withlimited space have a sticker with only a data matrix code containing the product identifier revision and serialnumber
The serial number string has the following format
nnnnrrssssssssss
n = product identifier
r = revision
s = serial number
The product identifier for AVR128DA48 Curiosity Nano is A09-3280
52 Revision 3Revision 3 is the initially released revision There are no known issues with this revision
AVR128DA48 Curiosity NanoHardware Revision History and Known Issues
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 27
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
6 Document Revision HistoryDoc rev Date Comment
A 032020 Initial document release
AVR128DA48 Curiosity NanoDocument Revision History
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 28
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
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Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
7 Appendix
71 SchematicFigure 7-1 AVR128DA48 Curiosity Nano Schematic
11
22
33
44
55
66
77
88
DD
CC
BB
AA
2 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_Ta
rget
_MCU
Sch
Doc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eTa
rget
MCU
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
GN
DV
CC_T
ARG
ET
100n
C201
GN
D
PA5_
SPI0
_MIS
OPA
6_SP
I0_S
CKPA
7_SP
I0_S
SPB
0_U
ART
3_TX
PB1_
UA
RT3_
RXPB
2PB
3PB
4PB
5PC
0_U
ART
1_TX
PC1_
UA
RT1_
RXPC
2_I2
C0_S
DA
PC3_I2C0_SCL
PC4PC5PC6_LED0_GPIO1PC7_SW0_GPIO0PD0_AIN0_WO0PD1_AIN1_WO1PD2_AIN2_WO2PD3_AIN3PD4_AIN4
PA3
PA1_UART0_RX
UPDI
PF5_UART2_RX
PF3
PF2
PF1_
TOSC
2PF
0_TO
SC1
PE3
PE2
PE1
PE0
PD5_
AIN
5PD
6_A
IN6
PD7_
AIN
7
GN
D
VCC
_TA
RGET
100n
C202
GN
DV
CC_T
ARG
ET10
0n
C200
PF1_TOSC2
PF0_TOSC1
PA2
PA0_UART0_TX
PF4_UART2_TX
PA4_SPI0_MOSI
GN
D
PA7_
SPI0
_SS
PA6_
SPI0
_SCK
PA5_
SPI0
_MIS
OPA
4_SP
I0_M
OSI
PA3
PA2
PA1_
UA
RT0_
RXPA
0_U
ART
0_TX
PB0_
UA
RT3_
TXPB
1_U
ART
3_RX
PB2
PB3
PB4
PB5
PD7_
AIN
7PD
6_A
IN6
PF5_
UA
RT2_
RXPF
4_U
ART
2_TX
PF3
PF2
32kH
z C
ryst
al
1kR203
USE
R L
ED
VCC
_TA
RGET
PF6_RESET
PC7_SW0_GPIO0
PC6_LED0_GPIO1
GN
D
USE
R B
UTT
ON
PE3
PE2
PE1
PE0
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC2_
I2C0
_SD
APC
3_I2
C0_S
CL
PC4
PC5
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
DV
CC_E
DG
E
GN
DG
ND
GN
DG
ND
UPD
IPF
6_RE
SET
J207
J208
J209
BLM
18PG
471S
N1
L200
AVR1
28D
A48
22u
FC2
05
VCC
_ED
GE
GN
D
DBG0
CDC_
UART
TXRXU
ART
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DEB
UG
GER
CO
NN
ECTI
ON
S
DBG1
DBG3DBG0
VOFF
ID_S
YS
ID_SYS
VOFF
TAR
GET
BU
LK
VCC
_TA
RGET
RES
ET P
ull
VBU
S
CDC
RX3
CDC
TX4
DBG
15
DBG
26
0 TX
71
RX8
2 SD
A9
3 SC
L10
4 M
OSI
115
MIS
O12
6 SC
K13
7 SS
14G
ND
150
(TX
)16
1 (R
X)
172
183
190
20
GN
D24
DBG
354
DBG
053
GN
D52
VCC
51
PWM
346
AD
C 2
45A
DC
144
AD
C 0
43G
ND
42
438
434
GN
D33
AD
C 7
50A
DC
649
AD
C 5
48PW
M 4
47
DEB
UG
GER
TARG
ET
ID2
VO
FF55
121
222
323
025
126
227
328
429
530
631
732
535
636
737
539
640
741
RESE
RVED
1V
BUS
56
CNA
NO
56-p
in e
dge
conn
ecto
r
J200
J201
J203
J205
J206
J202
J204
PF1
PF0
PF1_
TOSC
2PF
0_TO
SC1
NC
J211
J210
XOUT
XIN
47kR200
AVR
128D
A48
UPD
I
GPI
O1
GPI
O0
RESE
T
DBG
0
DBG
1
DBG
2
DBG
3
Deb
ugge
r
CD
C T
X
CD
C R
X
UA
RT1
RX
UA
RT1
TX
VTG
18V
- 5
5VPC6
PC7
PF6
UPD
I
PC0
PC1
Nam
ePi
n
PA5
1PA
62
PA7
3PB
04
PB1
5PB
26
PB3
7PB
48
PB5
9PC
010
PC1
11PC
212
PC3 13VDD 14GND 15PC4 16PC5 17PC6 18PC7 19PD0 20PD1 21PD2 22PD3 23PD4 24
PD5
25PD
626
PD7
27AV
DD28
GND
29PE
030
PE1
31PE
232
PE3
33XT
AL32
K1P
F034
XTAL
32K2
PF1
35PF
236
PF337 PF438 PF539 PF640 UPDI41 VDD42 GND43 EXTCLKPA044 PA145 PA246 PA347 PA448
AVR1
28D
A48
TQ
FPU
200
PC0_
UA
RT1_
TXPC
1_U
ART
1_RX
PC6_
LED
0_G
PIO
1PC
7_SW
0_G
PIO
0
AVD
D
PD2_
AIN
2_W
O2
PD1_
AIN
1_W
O1
PD0_
AIN
0_W
O0
PD5_
AIN
5PD
4_A
IN4
PD3_
AIN
3
XC2
00
12p
C203
12p
C204
327
68 k
Hz
Crys
tal d
atas
heet
Cc
rysta
l = 9
pFm
ax E
SR =
70k
Ohm
Acc
urac
y plusmn2
0ppm
AVR1
28D
A48
dat
ashe
et
Cxin
= 4
1pF
Cxou
t = 6
0pF
Cl asymp
1( (
14
1pF)
+ (1
60
pF) )
asymp2
44pF
Max
imum
Loa
d =
125
pFM
axim
um E
SR =
80k
Ohm
Estim
ated
Cpc
b =
05p
F
Estim
ated
load
C =
2 (C
crys
tal-
Cpar
a - C
pcb)
C
= 2
(9pF
- 2
44pF
- 0
5pF)
C =
121
2pF
Sele
cted
in d
esig
n af
ter v
erifi
catio
nC=
12p
F12
pF
NO
TE o
n U
ART
CD
C
RXT
X o
n th
e he
ader
den
otes
the
inpu
tout
put d
irect
ion
of th
e sig
nal
resp
ectiv
e to
its
sour
ce
CDC
TX is
out
put f
rom
the
DEB
UG
GER
CD
C RX
is in
put t
o th
e D
EBU
GG
ER
TX is
out
put f
rom
the
TARG
ET d
evic
eRX
is in
put t
o th
e TA
RGET
dev
ice
NO
TE o
n I2
C
No
pull-
ups o
n bo
ard
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 29
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
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Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
AVR1
28D
A48
Curio
sity
Nan
o
102
320
19AV
R128
DA
48_C
urio
sity
_Nan
o_D
ebug
gerS
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
rPC
BA R
evisi
on
File
PC
B N
umbe
rPC
B Re
visio
n
Des
igne
d wi
th
Dra
wn
By
PB Shee
t Titl
eD
ebug
ger
Engi
neer
A
H T
F
A08
-300
23
Size
A3
A09
-328
03
Page
D
ateA
ltium
com
DEB
UG
GER
USB
MIC
RO
-B C
ON
NEC
TOR
GN
D
USB
D_P
USB
D_N
100n
C107
100n
C108
RXTXU
ART
CDC_
UART
1kR1
07V
CC_P
3V3
SRST
STAT
US_
LED
SHIE
LD
VBU
S
VCC
_P3V
3G
ND
TP10
0
Testp
oint
Arra
y
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
47u
F
C100
DBG0
DBG
0
21
GRE
EN L
EDSM
L-P1
2MTT
86R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B014
2AB2
-269
J105
PAD
33
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
FPA
2322
USB_
DMP
A24
23US
B_DP
PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLKPA3031 SWDIOPA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-33
YM
TU
101
VCC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC106
VCC
_MCU
_CO
RE
VCC
_P3V
3
VCC
_P3V
3
22u
FC1
01
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4V
CC_P
3V3
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5V
CC_P
3V3
GN
D
GN
D GN
D
GN
D
VCC
_ED
GE
GN
D
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7V
CC_P
3V3
GN
DDB
G2
DBG
3_CT
RL
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RESE
RVED
S0_3
_CLK
DBG0_CTRL
CDC_
TX_C
TRL
BOO
T
DEB
UG
GER
PO
WER
STA
TUS
LED
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NCA
DJ5
GND 7
MIC
5353
U10
2
100n
C102
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R106
22u
F
C103 G
ND
1kR1
08
J100
VCC
_LEV
ELV
CC_R
EGU
LATO
R
74LV
C1T4
5FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6V
CC_P
3V3
GN
DDB
G1
CDC_
RXCD
C_TX
DBG3
DBG1_CTRL
DEB
UG
GER
REG
ULA
TOR
REG_ENABLE
REG
_EN
ABL
E
47kR103
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
VCC
_LEV
EL
47kR102
47kR105
SWCL
K
GN
D
47kR100 G
ND
DBG
2
S0_0
_RX
DBG
1_CT
RL
DBG
0_CT
RL
DBG
3 O
PEN
DR
AIN
TAR
GET
AD
JUST
ABL
E R
EGU
LATO
R
SRST
DEB
UG
GER
TES
TPO
INT DBG2_CTRL
VO
FFCD
C_RX
_CTR
L
47kR109
DBG
1
CDC_
TX_C
TRL
CDC_
RX_C
TRL
SWCL
K
REG_ADJUST
DBG2_GPIO
DBG
3_CT
RL
DBG
2_CT
RL
UPD
I
UPD
I
GPI
O
GPI
O
RESE
T
Sign
al
DBG
0
DBG
1
DBG
2
DBG
3
ICSP
Inte
rface
DAT
CLK
GPI
O
MCL
R
DBG
3
CD
C T
X
CD
C R
X
UA
RT R
X
UA
RT T
X
UA
RT R
X
UA
RT T
X
TAR
GET
TAR
GET
1kR1
10
VBUS_ADC
1
23
DM
N65
D8L
FBQ
101
VC
C-
-
ID_S
YS
VOFF
1kR112
VCC
_P3V
3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47kR111 G
ND
ID P
IN
MC3
6213
F100
VCC
_VBU
S
VCC
_VBU
S
VCC
_VBU
S
J101
VCC
_TA
RGET
47k
R113
Prog
ram
min
g co
nnec
tor f
or
fact
ory
prog
ram
min
g of
D
EBU
GG
ER
MIC
5528
Vi
n 2
5V
to 5
5V
Vout
Fix
ed 3
3V
Imax
500
mA
Dro
pout
260
mV
5
00m
A
PTC
Rese
ttabl
e fu
se
Hol
d cu
rrent
500
mA
Trip
cur
rent
100
0mA
Adj
usta
ble
outp
ut a
nd li
mita
tions
- T
he D
EBU
GG
ER c
an a
djus
t the
out
put v
olta
ge o
f the
regu
lato
r bet
wee
n 1
25V
and
51
V to
the
targ
et
- The
vol
tage
out
put i
s lim
ited
by th
e in
put (
USB
) w
hich
can
var
y be
twee
n 4
40V
to 5
25V
- The
leve
l shi
fters
hav
e a
min
imal
vol
tage
leve
l of 1
65V
and
will
lim
it th
e m
inim
um o
pera
ting
volta
ge a
llow
ed fo
r the
ta
rget
to st
ill a
llow
com
mun
icat
ion
- The
MIC
9416
3 ha
s a m
inim
al v
olta
ge le
vel o
f 17
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion
R113
is re
quire
d to
pul
l the
Q
101
gate
to a
def
ined
va
lue
whe
n th
e U
100
is no
t po
wer
ed
J100
Cu
t-stra
p us
ed fo
r ful
l sep
arat
ion
of ta
rget
pow
er fr
om th
e le
vel s
hifte
rs a
nd o
n-bo
ard
regu
lato
rs
- For
cur
rent
mea
sure
men
ts us
ing
an e
xter
nal p
ower
supp
ly t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts L
eaka
ge b
ack
thro
ugh
the
switc
h is
in th
e m
icro
am
pere
rang
e
J101
Th
is is
foot
prin
t for
a 1
x2 1
00m
il pi
tch
pin-
head
er th
at c
an b
e us
ed fo
r eas
y cu
rrent
mea
sure
men
t to
the
targ
et m
icro
cont
rolle
r and
the
LED
Bu
tton
To
use
the
foot
prin
t- C
ut th
e tra
ck b
etw
een
the
hole
s an
d m
ount
a p
in-h
eade
r
MIC
5353
Vi
n 2
6V
to 6
VVo
ut 1
25V
to 5
1V
Imax
500
mA
Dro
pout
(typ
ical
) 50
mV
15
0mA
160
mV
5
00m
AA
ccur
acy
2
initi
alTh
erm
al sh
utdo
wn
and
curre
nt li
mit
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor
(Vm
ax =
Vin
- dr
opou
t)
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 30
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
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To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
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All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
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Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
72 Assembly DrawingFigure 7-2 AVR128DA48 Curiosity Nano Assembly Drawing Top
Cb
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
Figure 7-3 AVR128DA48 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10001 PAC10002 COC100
PAC10101
PAC10102 COC101 PAC10202 PAC10201 COC102
PAC10302 PAC10301 COC103
PAC10601 PAC10602 COC106 PAC10701 PAC10702 COC107
PAC10801 PAC10802 COC108
PAC20002 PAC20001 COC200
PAC20102 PAC20101 COC201
PAC20202 PAC20201 COC202
PAC20301 PAC20302 COC203
PAC20401 PAC20402 COC204
PAC20502
PAC20501 COC205
PAD10002 PAD10001 COD100
PAD20001
PAD20002 COD200
PAF10002
PAF10001 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10201
PAJ10202
PAJ10203
PAJ10204
PAJ10205
PAJ10206 COJ102
PAJ10506
PAJ10507 PAJ10509
PAJ10508 PAJ105010
PAJ105011 PAJ10505
PAJ10504
PAJ10503
PAJ10502
PAJ10501
PAJ10500
COJ105
PAJ200056 PAJ200053
PAJ200028 PAJ20002 PAJ20001
PAJ200051 PAJ200050 PAJ200052 PAJ200049 PAJ200048 PAJ200047 PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023 PAJ200026 PAJ200025 PAJ200024 PAJ200027
PAJ200054 PAJ200055 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204
PAJ20502 PAJ20501 COJ205
PAJ20602 PAJ20601 COJ206
PAJ20701 PAJ20702 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208
PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
PAL20002 PAL20001 COL200
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100
COQ101 PAR10002
PAR10001 COR100 PAR10101 PAR10102 COR101
PAR10202 PAR10201 COR102
PAR10302 PAR10301 COR103
PAR10401 PAR10402 COR104
PAR10502
PAR10501 COR105
PAR10601 PAR10602 COR106
PAR10702 PAR10701 COR107
PAR10801
PAR10802 COR108
PAR10901 PAR10902 COR109
PAR11001 PAR11002 COR110
PAR11101 PAR11102 COR111
PAR11201 PAR11202 COR112
PAR11302 PAR11301 COR113
PAR20002 PAR20001 COR200
PAR20201
PAR20202 COR202 PAR20301
PAR20302 COR203
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100
PATP10101 COTP101 PAU100033
PAU100032 PAU100031 PAU100030 PAU100029 PAU100028 PAU100027 PAU100026 PAU100025 PAU100024
PAU100023
PAU100022
PAU100021
PAU100020
PAU100019
PAU100018
PAU100017 PAU100016 PAU100015 PAU100014 PAU100013 PAU100012 PAU100011 PAU100010
PAU10001
PAU10002
PAU10003
PAU10004
PAU10005
PAU10006
PAU10007
PAU10008 PAU10009
COU100
PAU10107
PAU10104 PAU10105 PAU10106
PAU10103 PAU10102 PAU10101 PAU10100 COU101 PAU10207
PAU10204 PAU10205
PAU10206
PAU10203 PAU10202
PAU10201
COU102
PAU10306
PAU10305 PAU10304 PAU10303
PAU10302 PAU10301 PAU10300
COU103
PAU10406
PAU10405 PAU10404 PAU10403
PAU10402 PAU10401 PAU10400
COU104
PAU10506
PAU10505 PAU10504 PAU10503
PAU10502 PAU10501 PAU10500
COU105
PAU10606
PAU10605 PAU10604 PAU10603
PAU10602 PAU10601 PAU10600
COU106
PAU10706
PAU10705 PAU10704 PAU10703
PAU10702 PAU10701 PAU10700
COU107
PAU1080A1 PAU1080A2
PAU1080B1 PAU1080B2
PAU1080C1 PAU1080C2 COU108
PAU200048 PAU200047 PAU200046 PAU200045 PAU200044 PAU200043 PAU200042 PAU200041 PAU200040 PAU200039 PAU200038 PAU200037 PAU200036 PAU200035 PAU200034 PAU200033 PAU200032 PAU200031 PAU200030 PAU200029 PAU200028 PAU200027 PAU200026 PAU200025 PAU200024 PAU200023 PAU200022 PAU200021 PAU200020 PAU200019 PAU200018 PAU200017 PAU200016 PAU200015 PAU200014 PAU200013
PAU200012 PAU200011 PAU200010 PAU20009 PAU20008 PAU20007 PAU20006 PAU20005 PAU20004 PAU20003 PAU20002 PAU20001
COU200
PAXC20001
PAXC20002
COXC200
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 31
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
73 Curiosity Nano Base for Click boardstrade
Figure 7-4 AVR128DA48 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
AVR1
28D
A48
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDCRX
USART1 TX
PC0
CDC TX
CDCTX
USART1 RX
PC1
DBG1
DBG1
PC6
LED0
DBG2
DBG2
PC7
SW0
PA0
PA0
USART0 TX
PTC XY0
PA1
PA1
USART0 RX
PTC XY1
PC2
PC2
TWI0 SDA
PC3
PC3
TWI0 SCL
PA4
PA4
SPI0 MOSI
PTC XY4
PA5
PA5
SPI0 MISO
PTC XY5
PA6
PA6
SPI0 SCK
PTC XY6
PA7
PA7
SPI0 SS
PTC XY7
GND
GND
PF4
PF4
USART2 TX
PTC XY36
PF5
PF5
USART2 RX
PTC XY37
PF2
PF2
PTC XY34
PF3
PF3
PTC XY35
PB0
PB0
PTC XY8
PB1
PB1
PTC XY9
PB2
PB2
PTC XY10
PB3
PB3
PTC XY11
GND
GND
PC0
PC0
USART1 TX
CDC RX
PC1
PC1
USART1 RX
CDC TX
PC6
PC6
LED0
PC7
PC7
SW0
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
PF6
DBG0
DBG0
UPDI
GND
GND
VTG
VTG
PD7
PD7
AIN7
PTC XY23
PD6
PD6
AIN6
PTC XY22
PD2
PD2
AIN2
PTC XY18
TCA0 WO2
PD1
PD1
AIN1
PTC XY17
TCA0 WO1
PD0
PD0
AIN0
PTC XY16
TCA0 WO0
PD5
PD5
AIN5
PTC XY21
PD4
PD4
AIN4
PTC XY20
PD3
PD3
AIN3
PTC XY19
GND
GND
PE3
PE3
PTC XY27
PE2
PE2
PTC XY26
PE1
PE1
PTC XY25
PE0
PE0
PTC XY24
PA3
PA3
PTC XY3
PA2
PA2
PTC XY2
PB5
PB5
PTC XY13
PB4
PB4
PTC XY12
GND
GND
PC5
PC5
PC4
PC4
(PF1)
(PF1)
(PTC XY33)
XTAL32K2
(PF0)
(PF0)
(PTC XY32)
XTAL32K1
DEB
UG
GER
AVR1
28D
A48
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Touch
Shared pin
AVR1
28D
A48
Curio
sity
Nan
o
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
PD3
PD0
PD7
PD6
PA7
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD4
PD1
PF3
PF2
PE2
PF5
PA6
PF4
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
PD5
PD2
PE1
PE0
PE3
PA1
PA6
PA0
PA5
PC3
PA4
PC2
+33V
+5V
GND
GND
ID
GND
PD4
PD5
PF3
PE1
PD1
PD2
PF2
PE3
PC2
PC3
PF5
PF4
PE2
PA4
PA5
PA6
GND
+33V
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 32
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
74 Disconnecting the On-board DebuggerThe on-board debugger and level shifters can be completely disconnected from the AVR128DA48
The block diagram below shows all connections between the debugger and the AVR128DA48 The rounded boxesrepresent connections to the board edge The signal names shown are also printed in silkscreen on the bottom sideof the board
To disconnect the debugger cut the straps shown in Figure 7-6
Attention Cutting the GPIO straps to the on-board debugger will disable the virtual serial portprogramming debugging and data streaming Cutting the power supply strap will disconnect the on-boardpower supply
Tip Any connection that is cut can be reconnected using solder alternatively a 0Ω 0402 resistor can bemounted
Tip When the debugger is disconnected an external debugger can be connected to holes shown in Figure 7-6 Details about connecting an external debugger are described in 36 Connecting ExternalDebuggers
Figure 7-5 On-Board Debugger Connections Block Diagram
DEB
UG
GER
TARGETLevel-Shift
PA04PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RX
CDC TX
DBG3
DBG2
DBG1
DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
UART RXUART TX
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 33
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 7-6 On-Board Debugger Connection Cut Straps
GPIO straps (bottom side) Power Supply strap (top side)
75 Getting Started with IARIAR Embedded Workbenchreg for AVRreg is a proprietary high-efficiency compiler not based on GCC Programming anddebugging of AVR128DA48 Curiosity Nano is supported in IARtrade Embedded Workbench for AVR using the Atmel-ICEinterface Some initial settings must be set up in the project to get the programming and debugging to work
The following steps will explain how to get your project ready for programming and debugging
1 Make sure you have opened the project you want to configure Open the OPTIONS dialog for the project2 In the category General Options select the Target tab Select the device for the project or if not listed the
core of the device as shown in Figure 7-73 In the category Debugger select the Setup tab Select Atmel-ICE as the driver as shown in Figure 7-84 In the category Debugger gt Atmel-ICE select the Atmel-ICE 1 tab Select UPDI as the interface and
optionally select the UPDI frequency as shown in Figure 7-9
Info If the selection of Debug Port (mentioned in step 4) is grayed out the interface is preselected andthe user can skip this configuration step
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 34
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 7-7 Select Target Device
Figure 7-8 Select Debugger
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 35
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
Figure 7-9 Configure Interface
AVR128DA48 Curiosity NanoAppendix
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 36
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
The Microchip WebsiteMicrochip provides online support via our website at httpwwwmicrochipcom This website is used to make filesand information easily available to customers Some of the content available includes
bull Product Support ndash Data sheets and errata application notes and sample programs design resources userrsquosguides and hardware support documents latest software releases and archived software
bull General Technical Support ndash Frequently Asked Questions (FAQs) technical support requests onlinediscussion groups Microchip design partner program member listing
bull Business of Microchip ndash Product selector and ordering guides latest Microchip press releases listing ofseminars and events listings of Microchip sales offices distributors and factory representatives
Product Change Notification ServiceMicrochiprsquos product change notification service helps keep customers current on Microchip products Subscribers willreceive email notification whenever there are changes updates revisions or errata related to a specified productfamily or development tool of interest
To register go to httpwwwmicrochipcompcn and follow the registration instructions
Customer SupportUsers of Microchip products can receive assistance through several channels
bull Distributor or Representativebull Local Sales Officebull Embedded Solutions Engineer (ESE)bull Technical Support
Customers should contact their distributor representative or ESE for support Local sales offices are also available tohelp customers A listing of sales offices and locations is included in this document
Technical support is available through the website at httpwwwmicrochipcomsupport
Microchip Devices Code Protection FeatureNote the following details of the code protection feature on Microchip devices
bull Microchip products meet the specification contained in their particular Microchip Data Sheetbull Microchip believes that its family of products is one of the most secure families of its kind on the market today
when used in the intended manner and under normal conditionsbull There are dishonest and possibly illegal methods used to breach the code protection feature All of these
methods to our knowledge require using the Microchip products in a manner outside the operatingspecifications contained in Microchiprsquos Data Sheets Most likely the person doing so is engaged in theft ofintellectual property
bull Microchip is willing to work with the customer who is concerned about the integrity of their codebull Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code
protection does not mean that we are guaranteeing the product as ldquounbreakablerdquo
Code protection is constantly evolving We at Microchip are committed to continuously improving the code protectionfeatures of our products Attempts to break Microchiprsquos code protection feature may be a violation of the DigitalMillennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work youmay have a right to sue for relief under that Act
Legal NoticeInformation contained in this publication regarding device applications and the like is provided only for yourconvenience and may be superseded by updates It is your responsibility to ensure that your application meets with
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 37
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHEREXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATIONINCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY ORFITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchipdevices in life support andor safety applications is entirely at the buyerrsquos risk and the buyer agrees to defendindemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from suchuse No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights unlessotherwise stated
TrademarksThe Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTimeBitCloud chipKIT chipKIT logo CryptoMemory CryptoRF dsPIC FlashFlex flexPWR HELDO IGLOO JukeBloxKeeLoq Kleer LANCheck LinkMD maXStylus maXTouch MediaLB megaAVR Microsemi Microsemi logo MOSTMOST logo MPLAB OptoLyzer PackeTime PIC picoPower PICSTART PIC32 logo PolarFire Prochip DesignerQTouch SAM-BA SenGenuity SpyNIC SST SST Logo SuperFlash Symmetricom SyncServer TachyonTempTrackr TimeSource tinyAVR UNIO Vectron and XMEGA are registered trademarks of Microchip TechnologyIncorporated in the USA and other countries
APT ClockWorks The Embedded Control Solutions Company EtherSynch FlashTec Hyper Speed ControlHyperLight Load IntelliMOS Libero motorBench mTouch Powermite 3 Precision Edge ProASIC ProASIC PlusProASIC Plus logo Quiet-Wire SmartFusion SyncWorld Temux TimeCesium TimeHub TimePictra TimeProviderVite WinPath and ZL are registered trademarks of Microchip Technology Incorporated in the USA
Adjacent Key Suppression AKS Analog-for-the-Digital Age Any Capacitor AnyIn AnyOut BlueSky BodyComCodeGuard CryptoAuthentication CryptoAutomotive CryptoCompanion CryptoController dsPICDEMdsPICDEMnet Dynamic Average Matching DAM ECAN EtherGREEN In-Circuit Serial Programming ICSPINICnet Inter-Chip Connectivity JitterBlocker KleerNet KleerNet logo memBrain Mindi MiWi MPASM MPFMPLAB Certified logo MPLIB MPLINK MultiTRAK NetDetach Omniscient Code Generation PICDEMPICDEMnet PICkit PICtail PowerSmart PureSilicon QMatrix REAL ICE Ripple Blocker SAM-ICE Serial QuadIO SMART-IS SQI SuperSwitcher SuperSwitcher II Total Endurance TSHARC USBCheck VariSenseViewSpan WiperLock Wireless DNA and ZENA are trademarks of Microchip Technology Incorporated in the USAand other countries
SQTP is a service mark of Microchip Technology Incorporated in the USA
The Adaptec logo Frequency on Demand Silicon Storage Technology and Symmcom are registered trademarks ofMicrochip Technology Inc in other countries
GestIC is a registered trademark of Microchip Technology Germany II GmbH amp Co KG a subsidiary of MicrochipTechnology Inc in other countries
All other trademarks mentioned herein are property of their respective companiescopy 2020 Microchip Technology Incorporated Printed in the USA All Rights Reserved
ISBN 978-1-5224-5760-2
Quality Management SystemFor information regarding Microchiprsquos Quality Management Systems please visit httpwwwmicrochipcomquality
AVR128DA48 Curiosity Nano
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 38
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-
AMERICAS ASIAPACIFIC ASIAPACIFIC EUROPECorporate Office2355 West Chandler BlvdChandler AZ 85224-6199Tel 480-792-7200Fax 480-792-7277Technical SupporthttpwwwmicrochipcomsupportWeb AddresshttpwwwmicrochipcomAtlantaDuluth GATel 678-957-9614Fax 678-957-1455Austin TXTel 512-257-3370BostonWestborough MATel 774-760-0087Fax 774-760-0088ChicagoItasca ILTel 630-285-0071Fax 630-285-0075DallasAddison TXTel 972-818-7423Fax 972-818-2924DetroitNovi MITel 248-848-4000Houston TXTel 281-894-5983IndianapolisNoblesville INTel 317-773-8323Fax 317-773-5453Tel 317-536-2380Los AngelesMission Viejo CATel 949-462-9523Fax 949-462-9608Tel 951-273-7800Raleigh NCTel 919-844-7510New York NYTel 631-435-6000San Jose CATel 408-735-9110Tel 408-436-4270Canada - TorontoTel 905-695-1980Fax 905-695-2078
Australia - SydneyTel 61-2-9868-6733China - BeijingTel 86-10-8569-7000China - ChengduTel 86-28-8665-5511China - ChongqingTel 86-23-8980-9588China - DongguanTel 86-769-8702-9880China - GuangzhouTel 86-20-8755-8029China - HangzhouTel 86-571-8792-8115China - Hong Kong SARTel 852-2943-5100China - NanjingTel 86-25-8473-2460China - QingdaoTel 86-532-8502-7355China - ShanghaiTel 86-21-3326-8000China - ShenyangTel 86-24-2334-2829China - ShenzhenTel 86-755-8864-2200China - SuzhouTel 86-186-6233-1526China - WuhanTel 86-27-5980-5300China - XianTel 86-29-8833-7252China - XiamenTel 86-592-2388138China - ZhuhaiTel 86-756-3210040
India - BangaloreTel 91-80-3090-4444India - New DelhiTel 91-11-4160-8631India - PuneTel 91-20-4121-0141Japan - OsakaTel 81-6-6152-7160Japan - TokyoTel 81-3-6880- 3770Korea - DaeguTel 82-53-744-4301Korea - SeoulTel 82-2-554-7200Malaysia - Kuala LumpurTel 60-3-7651-7906Malaysia - PenangTel 60-4-227-8870Philippines - ManilaTel 63-2-634-9065SingaporeTel 65-6334-8870Taiwan - Hsin ChuTel 886-3-577-8366Taiwan - KaohsiungTel 886-7-213-7830Taiwan - TaipeiTel 886-2-2508-8600Thailand - BangkokTel 66-2-694-1351Vietnam - Ho Chi MinhTel 84-28-5448-2100
Austria - WelsTel 43-7242-2244-39Fax 43-7242-2244-393Denmark - CopenhagenTel 45-4485-5910Fax 45-4485-2829Finland - EspooTel 358-9-4520-820France - ParisTel 33-1-69-53-63-20Fax 33-1-69-30-90-79Germany - GarchingTel 49-8931-9700Germany - HaanTel 49-2129-3766400Germany - HeilbronnTel 49-7131-72400Germany - KarlsruheTel 49-721-625370Germany - MunichTel 49-89-627-144-0Fax 49-89-627-144-44Germany - RosenheimTel 49-8031-354-560Israel - RarsquoananaTel 972-9-744-7705Italy - MilanTel 39-0331-742611Fax 39-0331-466781Italy - PadovaTel 39-049-7625286Netherlands - DrunenTel 31-416-690399Fax 31-416-690340Norway - TrondheimTel 47-72884388Poland - WarsawTel 48-22-3325737Romania - BucharestTel 40-21-407-87-50Spain - MadridTel 34-91-708-08-90Fax 34-91-708-08-91Sweden - GothenbergTel 46-31-704-60-40Sweden - StockholmTel 46-8-5090-4654UK - WokinghamTel 44-118-921-5800Fax 44-118-921-5820
Worldwide Sales and Service
copy 2020 Microchip Technology Inc User Guide DS50002971A-page 39
- Preface
- Table of Contents
- 1 Introduction
-
- 11 Features
- 12 Kit Overview
-
- 2 Getting Started
-
- 21 Quick Start
- 22 Design Documentation and Relevant Links
-
- 3 Curiosity Nano
-
- 31 On-Board Debugger Overview
-
- 311 Debugger
- 312 Virtual Serial Port (CDC)
-
- 3121 Overview
- 3122 Operating System Support
- 3123 Limitations
- 3124 Signaling
- 3125 Advanced Use
-
- 313 Mass Storage Device
-
- 3131 Mass Storage Device Implementation
- 3132 Fuse Bytes
- 3133 Limitations of Drag-and-Drop Programming
- 3134 Special Commands
-
- 314 Data Gateway Interface (DGI)
-
- 3141 Debug GPIO
- 3142 Timestamping
-
- 32 Curiosity Nano Standard Pinout
- 33 Power Supply
-
- 331 Target Regulator
- 332 External Supply
- 333 VBUS Output Pin
- 334 Power Supply Exceptions
-
- 34 Low Power Measurement
- 35 Programming External Microcontrollers
-
- 351 Supported Devices
- 352 Software Configuration
- 353 Hardware Modifications
- 354 Connecting to External Microcontrollers
-
- 36 Connecting External Debuggers
-
- 4 Hardware User Guide
-
- 41 Connectors
-
- 411 AVR128DA48 Curiosity Nano Pinout
- 412 Using Pin Headers
-
- 42 Peripherals
-
- 421 LED
- 422 Mechanical Switch
- 423 Crystal
- 424 On-Board Debugger Implementation
-
- 4241 On-Board Debugger Connections
-
- 5 Hardware Revision History and Known Issues
-
- 51 Identifying Product ID and Revision
- 52 Revision 3
-
- 6 Document Revision History
- 7 Appendix
-
- 71 Schematic
- 72 Assembly Drawing
- 73 Curiosity Nano Base for Click boardstrade
- 74 Disconnecting the On-board Debugger
- 75 Getting Started with IAR
-
- The Microchip Website
- Product Change Notification Service
- Customer Support
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System
- Worldwide Sales and Service
-