SAM7-NRF24 development board Users Manual

All boards produced by Olimex are ROHS compliant

Rev. Initial, April 2011Copyright(c) 2011, OLIMEX Ltd, All rights reserved

Page 1

INTRODUCTION:

SAM7-NRF24 is low cost board with AT91SAM7S64 and 2.4Ghz NRF24L01 transceiver, it allow easy communication between PC with other boards which have nRF24L01 chips on them as MOD-NRF24Lx, or STM32-103STK.

BOARD FEATURES:– MCU: AT91SAM7S64 16/32 bit ARM7TDMI™ with 64K Bytes Program Flash,

16K Bytes RAM, USB 2.0, RTT, 10 bit ADC 384 ksps, 2x UARTs, TWI (I2C), SPI, 3x 32bit TIMERS, 4x PWM, SSC, WDT, PDC (DMA) for all peripherals, up to 60MHz operation

– Nordic nRF24L01

– on board voltage regulator 3.3V with up to 250 mA current

– power supply filtering capacitor

– 18.432 Mhz crystal

– Power-on led

– on-board antenna

– PCB: FR-4, 1.5 mm (0,062"), soldermask, silkscreen component print

– Dimensions: 73.66 x 29.46 mm (2.90 x 1.16")

ELECTROSTATIC WARNING:

The SAM7-NRF24 board is shipped in protective anti-static packaging. The board must not be subject to high electrostatic potentials. General practice for working with static sensitive devices should be applied when working with this board.

BOARD USE REQUIREMENTS:

Cables: The cable you will need depends on the programmer/debugger you use. If you use ARM-JTAG, you will need LPT cable, if you use ARM-USB-TINY, ARM-USB-TINY-H, or ARM-JTAG-EW, you will need A-B USB cable, if you use ARM-USB-OCD, or ARM-USB-OCD-H, you will need A-B USB cable and optional null modem cable.

Hardware: Programmer/Debugger – one of our Programmers – ARM-JTAG-EW, ARM-JTAG, ARM-USB-OCD, ARM-USB-TINY, ARM-USB-OCD-H, ARM-USB-TINY-H, or similar to them.

Note: These programmers can not be used with SAM7-NRF24 without an adapter. The signals are terminated at JTAG (not typical) holes. We don't offer such an adapter, so you have to make it by yourself.The board can be programmed without programmer via SAM-BA.

PROCESSOR FEATURES:

Page 2

SAM7-NRF24 board use AT91SAM7S64 - low pincount Flash microcontroller based on the 32-bit ARM7TDMI RISC processor with these features:

• Incorporates the ARM7TDMI® ARM® Thumb® Processor

– High-performance 32-bit RISC Architecture

– High-density 16-bit Instruction Set

– Leader in MIPS/Watt

– Embedded ICE In-circuit Emulation, Debug Communication Channel Support

• 64 Kbytes of Internal High-speed Flash, Organized in 512 Pages of 128 Bytes

– Single Cycle Access at Up to 30 MHz in Worst Case Conditions, Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed

– Page Programming Time: 4 ms, Including Page Auto-erase, Full Erase Time: 10 ms

– 10,000 Write Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, Flash Security Bit

– Fast Flash Programming Interface for High Volume Production

• 16 Kbytes of Internal High-speed SRAM, Single-cycle Access at Maximum Speed

• Memory Controller (MC)

– Embedded Flash Controller, Abort Status and Misalignment Detection

• Reset Controller (RSTC)

– Based on Power-on Reset and Low-power Factory-calibrated Brownout Detector

– Provides External Reset Signal Shaping and Reset Source Status

• Clock Generator (CKGR)

– Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and one PLL

• Power Management Controller (PMC)

– Software Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and Idle Mode

– Three Programmable External Clock Signals

• Advanced Interrupt Controller (AIC)

– Individually Maskable, Eight-level Priority, Vectored Interrupt Sources

– Two External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt Protected

• Debug Unit (DBGU)

– 2-wire UART and Support for Debug Communication Channel interrupt,

Programmable ICE Access Prevention

• Periodic Interval Timer (PIT)

– 20-bit Programmable Counter plus 12-bit Interval Counter

Page 3

• Windowed Watchdog (WDT)

– 12-bit key-protected Programmable Counter

– Provides Reset or Interrupt Signals to the System

– Counter May Be Stopped While the Processor is in Debug State or in Idle Mode

• Real-time Timer (RTT)

– 32-bit Free-running Counter with Alarm

– Runs Off the Internal RC Oscillator

• One Parallel Input/Output Controller (PIOA)

– Thirty-two Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os

– Input Change Interrupt Capability on Each I/O Line

– Individually Programmable Open-drain, Pull-up resistor and Synchronous Output

• Eleven Peripheral DMA Controller (PDC) Channels

• One USB 2.0 Full Speed (12 Mbits per second) Device Port

– On-chip Transceiver, 328-byte Configurable Integrated FIFOs

• One Synchronous Serial Controller (SSC)

– Independent Clock and Frame Sync Signals for Each Receiver and Transmitter

– I²S Analog Interface Support, Time Division Multiplex Support

– High-speed Continuous Data Stream Capabilities with 32-bit Data Transfer

• Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)

– Individual Baud Rate Generator, IrDA Infrared Modulation/Demodulation

– Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking, RS485 Support

– Full Modem Line Support on USART1

• One Master/Slave Serial Peripheral Interface (SPI)

– 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects

• One Three-channel 16-bit Timer/Counter (TC)

– Three External Clock Inputs, Two Multi-purpose I/O Pins per Channel

– Double PWM Generation, Capture/Waveform Mode, Up/Down Capability

• One Four-channel 16-bit PWM Controller (PWMC)

• One Two-wire Interface (TWI)

– Master Mode Support Only, All Two-wire Atmel EEPROMs Supported

Page 4

• One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os

• IEEE 1149.1 JTAG Boundary Scan on All Digital Pins

• 5V-tolerant I/Os, including Four High-current Drive I/O lines, Up to 16 mA Each

• Power Supplies

– Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and External Components

– 3.3V VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply

– 1.8V VDDCORE Core Power Supply with Brownout Detector

• Fully Static Operation: Up to 55 MHz at 1.65V and 85° C Worst Case Conditions

Page 5

BLOCK DIAGRAM:

Page 6

MEMORY MAP:

Page 7

SCHEMATIC:

Page 8

22p/

NP

O/2

%

22p/

NP

O/2

%

2.2n

F/X

7R/1

0%4.

7pF/

NP

O/+

-0.2

5p

1.5p

/NP

O/+

-0.1

p 1p/N

PO

/+-0

.1p

33nF

/X7R

/10%

1nF/

X7R

/10%

10nF

/X7R

/10%

10n

15p

47uF

/6.3

V

15p

33p

100n

NA

10p

100n

100n

100n

100n

100n

100n

10p

100n

1n

100n

2.2u

F

1nF

10nF

2.2u

F

100n

100n

1uF

1uF

IRLM

L640

2

IRLM

L640

2(N

A)

8.2n

H/5

%

2.7n

H/5

%

3.9n

H/5

%

+5V

18.4

32M

Hz

1M/1

0%

22K

/1%

47K

47K

47K

560

10K

1.5K

27

15K

22K

47K

1.5K

100

330K

330K

27

NA

47K

(NA

)

1.5K

(NA

)

100(

NA

)

NR

F24L

01

MC

P13

0T

US

B_A

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

3.3V

MC

P17

00T-

3302

E/M

B

16M

Hz

50_O

HM

CE

CE

CS

N

CSN

DM

_PU

P

DM

_PU

P

DP_

PUP

DP_

PUP

IRQ

IRQ

MIS

O

MIS

O

MO

SI

MO

SI

RST

RST

SPC

K

SP

CK

USB

_D

USB

_D

3.3V

C1

C2

C3

C4

C5

C6

C7

C8

C9

C10

C12

C13

C14

C15

C16

C17

C18

C20

C22

C23C

24C

25C

26

C28

C29

C30

C31

C32

C33

C34

C35

C36

C37

C38

C39

FET

FET1

GN

D

GN

D_

L1 L2

L3

Q1

R1

R2

R3R4R5

R12

R13

R14

R15

R16

R17

R18

R19

R22

R32

R34

R36

R37

R38

R39

R40

RS

T

STA

T

TCK

TDI

TDO

12

TES

T

TMS

AN

T112

AN

T213

CE

1

CS

N2

DV

DD

19IR

EF

16

IRQ

6

MIS

O5

MO

SI

4S

CK

3

VD

D7

VD

D_1

15

VD

D_2

18

VD

D_P

A11

VS

S8

VS

S_1

14

VS

S_2

17

VS

S_3

20

XC

110

XC

29

U1

AD

43

AD

54

AD

65

AD

76

AD

VR

EF

1

DD

M56

DD

P57

ER

AS

E55

GN

D1

2

GN

D2

17

GN

D3

46

GN

D4

60

JTA

GS

EL

50

NR

ST

39P

A0/

PW

M0/

TIO

A0

48

PA

1/P

WM

1/TI

OB

047

PA

2/P

WM

2/S

CK

044

PA

3/TW

D/N

PC

S3

43

PA

4/TW

CK

/TC

LK0

36

PA

5/R

XD

0/N

PC

S3

35

PA

6/TX

D0/

PC

K0

34

PA

7/R

TS0/

PW

M3

32

PA

8/C

TS0/

AD

TRG

31

PA

9/D

RX

D/N

PC

S1

30

PA

10/D

TXD

/NP

CS

229

PA

11/N

PC

S0/

PW

M0

28

PA

12/M

ISO

/PW

M1

27

PA

13/M

OS

I/PW

M2

22

PA

14/S

PC

K/P

WM

321

PA

15/T

F/TI

OA

120

PA

16/T

K/T

IOB

119

PA

17/T

D/P

CK

1/A

D0

9

PA

18/R

D/P

CK

2/A

D1

10

PA

19/R

K/F

IQ/A

D2

13

PA

20/R

F/IR

Q0/

AD

316

PA

21/R

XD

1/P

CK

111

PA

22/T

XD

1/N

PC

S3

14

PA

23/S

CK

1/P

WM

015

PA

24/R

TS1/

PW

M1

23

PA

25/C

TS1/

PW

M2

25

PA

26/D

CD

1/TI

OA

226

PA

27/D

TR1/

TIO

B2

37

PA

28/D

SR

1/TC

LK1

38

PA

29/R

I1/T

CLK

241

PA

30/IR

Q1/

NP

CS

242

PA

31/N

PC

S1/

PC

K2

52

PLL

RC

63

TCK

53

TDI

33

TDO

49

TMS

51

TST

40

VD

DC

OR

E1

12

VD

DC

OR

E2

24

VD

DC

OR

E3

54

VD

DFL

AS

H59

VD

DIN

7

VD

DIO

118

VD

DIO

245

VD

DIO

358

VD

DO

UT

8

VD

DP

LL64

XIN

62

XO

UT

61

U2

AT9

1SA

M7S

64

3

12U

5

GN

D

VC

CR

ES

ET

1 2 3 4

US

B

GN

D1

VIN

2

VO

UT

3

VR

1(3.

3V)

GN

DG

ND

_X

1

SAM

7-N

RF2

4R

ev. I

nitia

l

CO

PY

RIG

HT(

C),

200

9

http

://w

ww

.olim

ex.c

om/d

ev

+

USB

SH

IEL

D

BOARD LAYOUT:

POWER SUPPLY CIRCUIT:SAM7-NRF24 is power supplied with +5V from USB.

RESET CIRCUIT:SAM7-NRF24 reset circuit includes U5 – MCP130T, R13 (10k) – pull-up and AT91SAM7S64 pin 39 (NRST).

CLOCK CIRCUIT:Quartz crystal 18.432 MHz is connected to AT91SAM7S64 pin 61 (XOUT) and pin 62 (XIN).

Page 9

JUMPER DESCRIPTION:

TESTConnects AT91SAM7S64 pin 40 (TST) to 3.3V. The pin TST is used for manufacturing test or fast programming mode of the AT91SAM7S64 when asserted high.There is no component mounted for this jumper. The TEST jumper is used for programming with SAM-BA:1. Power down the board2. Short the TEST jumper 3. Power up the board for 10 sec.4. Power down the board.5. Remove TEST jumper6. Power up the board again.Now you can connect the board using SAM-BA.Default state of the jumper is not shorted.

INPUT/OUTPUT:Power-on LED (red) with name STAT – this led shows that +3.3V is applied to the board.

CONNECTOR DESCRIPTIONS:

JTAG (Not typical):

Pin # Signal Name Pin # Signal Name

1 GND 2 TCK

3 TDO 4 TMS

5 RST 6 TDI

7 GND 8 3.3V

There is no connector mounted on the board for the JTAG.

USB:Pin # Signal Name

1 +5V_USB

2 DDM

3 DDP

4 GND

This is view from the bottom.

Page 10

MECHANICAL DIMENSIONS:

Page 11

AVAILABLE DEMO SOFTWARE:

–SAM7-nRF24_IAR_5.41_demoThe board comes with software for virtual COM Port.You have to note that each board comes with software for Node A. So, if you want to

communicate between two boards SAM7-NRF24, you have to program the one with Node B. This can be made via SAM-BA, by loading RfVirtualComNodeB.bin, which can be find in our demo software package. Other way to load the board is with some of our programmers/debuggers, via IAR Embedded Workbench IDE 5.41. Load RfVirtualCom.eww, which can be find in our demo software package, too. In workspace drop down menu you have to choose Node B Debug:

Page 12

ORDER CODE:SAM7-NRF24 – assembled and tested board, includes AT91SAM7S64 microcontroller and Nordic NRF24L01

How to order? You can order to us directly or by any of our distributors. Check our web www.olimex.com/dev for more info.

Revision history:

Board's Revision: Rev. Initial – created October 2007Manual's Revision: Rev. Initial – created April 2011

Page 13

Disclaimer:

© 2011 Olimex Ltd. All rights reserved. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd. Other terms and product names may be trademarks of others.

The information in this document is provided in connection with Olimex products. No license, express or implied or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Olimex products.

Neither the whole nor any part of the information contained in or the product described in this document may be adapted or reproduced in any material from except with the prior written permission of the copyright holder.

The product described in this document is subject to continuous development and improvements. All particulars of the product and its use contained in this document are given by OLIMEX in good faith. However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded.

This document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product.

Page 14