mm32f3270 evaluation board user guide introduction
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Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 1 -
MM32F3270 Evaluation Board User Guide
Introduction
MM32F3270 Evaluation Board (hereinafter referred to as MM32F3270 EVB), cooperating with ARM
Keil/IAR integrated development environment, MM32 Program programming software, MM32 FDS, and
embedded MM32-LINK-OB emulator, works as a hardware product for evaluating MCU performance in
the MindMotion MCU developing ecosystem.
Figure 1. MM32F3270 EVB appearance picture
Features
MM32F3270 EVB has the following features :
Support MindMotion MM32F3270 series MCU development evaluation
External clock 8MHz/32.768KHz
Support Keil uVision v5.0 / IAR EWARM v7.80 or later
Support MindMotion MM32 Firmware development suite (MM32 FDS)
Support MindMotion MM32 Program programming software
The MCU power supply of the development board is designed based on 3.3V
Embedded MM32-LINK-OB online emulator
Support SWD debugging interface and CDC virtual serial port
Emulator USB (Micro USB) socket power supply
USB Host/Device Type-C interface
4-Buttons/4-LEDs
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2-UART three-pin socket (with CMOS level)
1-SPI five-pin socket (with CMOS level)
1-CAN two-pin socket with CAN driver and terminal matching resistance selection switch
1-1MBytes SPI Flash memory
1-256Bytes I2C EEPROM memory
1-3.5mm headphone jack for I2S L/R audio output
1-TF Card socket
2-RJ45 network socket
1-34-pin parallel bus connector, support 2.8’’ LCD display (optional)
CR1210 backup battery (customized)
1-Speaker
3-Analog input potentiometer
3-Switch: USB working mode, pin function and CAN terminal matching resistance
4-36pin is the same as the MCU pin sequence, with a double-row connector with a pitch of 0.1
inches
PCB board size: 6.4*3.2 inches
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Connectors and Switches
The function of MM32F3270 EVB connector is shown in the table below :
Table 1. List of connector functions
Item Connector Function Descriptions
CN1 Micro USB Power/Emulator Power supply and debugging /download socket
CN2 2*18/0.1inch MCU Pins (1) MCU pin connector (pin No. 1-36)
CN3 Type-C USB USB MCU USB socket, supporting Host/Device mode
CN4 3.5mm L/R Headphone Headphone jack
CN5 RJ45 Ethernet (1) Ethernet socket, PHY address = 0x0
CN6 RJ45 Ethernet (2) Ethernet socket, PHY address = 0x1
CN7 3pin/0.1inch UART (1) UART socket, connected to MCU UART2
CN8 2*4/0.1inch Emulator pgm Reserved, unavailable to users
CN9 3pin/0.1inch UART (2) UART socket, connected to MCU UART3
CN10 5pin/0.1inch SPI SPI2 socket, NSS1 connects to PD11
CN11 2*18/0.1inch MCU Pins (2) MCU pin connector (pin No. 37-72)
CN12 2*17/0.1inch Parallel / LCD FSMC connector, supporting MDM2803 LCD module
CN13 2*18/0.1inch MCU Pins (4) MCU pin connector (pin No. 109-144)
CN14 2*10/0.1inch Ext. Debug port Debugging connector, available after MM32-LINK-OB upgrade
CN15 2pin/0.1inch CAN CAN socket, the board supports terminal matching resistance
CN16 2*18/0.1inch MCU Pins (3) MCU pin connector (pin No. 73-108)
CN17 TF Card SDIO SD/TF Card socket
The functions of MM32F3270 EVB toggle switch are shown in the table below:
Table 2. List of toggle switch functions
Item Switch Function Descriptions
SW1 2*2 USB Host / Device USB selection switch, functions are shown in PCB SW1 marking
SW2 2*2 Pin Functions MCU pin alternate switch, functions are shown in PCB SW2 marking
SW3 1*2 CAN Res. Selection Terminal resistance selection, switch to the right side to connect resistor
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Peripherals
Key. LED. Socket The connection relationship and functions of MM32F3270 EVB key are shown in the table below:
Table 3. Connection relationship between key function and MCU
Item MCU Active Descriptions
K1 PB1 High User key, the key action signal is used as the wakeup
K2 PB2 Low User key, alternated with Ethernet ETH_INT1 signal
K3 PB10 Low User key
K4 PB0 Low User key
The connection relation of MM32F3270 EVB LED is shown in the table below:
Table 4. Connection relationship between LED and MCU
Item MCU Alternate Descriptions
LD1 PA15 I2S WS LED1, alternated with I2S WS signal
LD2 PB3 I2S SCK LED2, alternated with I2S SCK signal
LD3 PB4 I2S Standby LED3, alternated with I2S Standby signal
LD4 PB5 I2S SD LED4, alternated with I2S SD signal
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The connection relationship between FSMC and MCU is shown in the table below:
Table 5. Connection relationship between FSMC and MCU
Pin MCU Function Descriptions
1 PD7 nCS Chip select signal, active low
2 PD13 RS RS signal
3 PD5 nWR WR signal, active low
4 PD4 nRD RD signal, active low
5 nRST nRST Reset signal, active low
6 PD15 D1 DATA 1
7 PD0 D2 DATA 2
8 PD1 D3 DATA 3
9 PE7 D4 DATA 4
10 PE8 D5 DATA 5
11 PE9 D6 DATA 6
12 PE10 D7 DATA 7
13 PE11 D8 DATA 8
14 PE13 D10 DATA 10
15 PE14 D11 DATA 11
16 PE15 D12 DATA 12
17 PD8 D13 DATA 13
18 PD9 D14 DATA 14
19 PD10 D15 DATA 15
20 --- Res. Reserved
21 --- Res. Reserved
22 PE12 D9 DATA 9
23 PF11 BL Backlight control, active high
24 --- Res. Reserved
25 VDD VDD VDD, 3.3V
26 PD14 D0 DATA 0
27 GND GND GND
28 --- Res. Reserved
29 --- Res. Reserved
30 --- Res. Reserved
31 --- Res. Reserved
32 --- Res. Reserved
33 --- Res. Reserved
34 --- Res. Reserved
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The pin definition of MM32F3270 EVB UART(1) socket is shown in the table below:
Table 6. UART (1) socket pin definition table
Pin Function / MCU Alternate Descriptions
1 GND Signal ground
2 RXD / PA3 --- MCU UART2 Receive signal, CMOS level
3 TXD / PA2 ETH_MDIO MCU UART2 Send signal, CMOS level
The pin definition of MM32F3270 EVB UART(2) socket is shown in the table below:
Table 7. UART (2) socket pin definition table
Pin Function / MCU Alternate Descriptions
1 GND Signal ground
2 RXD / PE0 --- MCU UART8 Receive signal, CMOS level
3 TXD / PE1 --- MCU UART8 Send signal, CMOS level
The pin definition of MM32F3270 EVB SPI socket is shown in the table below:
Table 8. SPI socket pin definition table
Pin Function / MCU Alternate Descriptions
1 GND Signal ground
2 NSS1 / PD11 --- MCU PD11, CMOS level
3 MOSI / PB15 --- MCU SPI2 MOSI signal, CMOS level
4 MISO / PB14 --- MCU SPI2 MISO signal, CMOS level
5 SCK / PB13 ETH_TD1 MCU SPI2 SCK signal, CMOS level
The pin definition of MM32F3270 EVB CAN socket is shown in the table below:
Table 9. CAN socket pin definition table
Pin Function Alternate Descriptions
1 CANH --- CAN Bus High
2 CANL --- CAN Bus Low
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Signal The connection relationship between MM32-LINK-OB CDC and MCU is shown in the table below:
Table 10. Connection relationship between MM32-LINK-OB CDC and MCU
MCU Function Descriptions
PA10 RXD MCU UART1 RXD and CDC TXD signal, must be set to IPU mode during initialization
PA9 TXD MCU UART1 TXD and CDC RXD signal
The connection relationship between analog signal and MCU is shown in the table below:
Table 11. Connection relationship between analog signal and MCU
MCU Function Descriptions
PA1 ADC1(RV3) RV3, MCU Ain 1 signal, alternated with ETH_RCLK through switch SW2
PA4 ADC2(RV2) RV2, MCU Ain 4 signal
PA5 ADC3(RV1) RV1, MCU Ain 5 signal
The connection relationship between I2C EEPROM and MCU is shown in the table below:
Table 12. Connection relationship between I2C EEPROM and MCU
MCU Function Descriptions
PB6 SCL MCU I2C1 SCL signal
PB7 SDA MCU I2C1 SDA signal
The connection relationship between SPI Flash and MCU is shown in the table below:
Table 13. Connection relationship between SPI Flash and MCU
MCU Function Descriptions
PB12 NSS0 MCU SPI2 NSS0 signal, alternated with ETH_TD0 through switch SW2
PB13 SCK MCU SPI2 SCK signal
PB14 MISO MCU SPI2 MISO signal
PB15 MOSI MCU SPI2 MOSI signal
The connection relationship between SD/TF Card and MCU is shown in the table below:
Table 14. Connection relationship between SD/TF Card and MCU
MCU Function Descriptions
PC6 DET SD/TF Card existence detection signal, low level is active, LD12 LED is on
PC8 DAT0 MCU SDIO DATA 0 signal
PC9 DAT1 MCU SDIO DATA 1 signal
PC10 DAT2 MCU SDIO DATA 2 signal
PC11 DAT3 MCU SDIO DATA 3 signal
PC12 CLK MCU SDIO CLK signal
PD2 CMD MCU SDIO CMD signal
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The connection relationship between Speaker and MCU in PWM mode is shown in the table below:
Table 15. Connection relationship between Speaker and MCU
MCU Function Descriptions
PA8 Speaker MCU PWM output
The connection relationship between USB and MCU is shown in the table below:
Table 16. Connection relationship between USB and MCU
MCU Function Descriptions
PC13 PWR_ON Host mode power output control, active low
PC2 CC1 USB Type-C CC1 Signal level detection
PC3 CC2 USB Type-C CC2 Signal level detection
PA11 DM MCU USB DM Signal
PA12 DP MCU USB DP Signal
The connection relationship between I2S and MCU is shown in the table below:
Table 17. Connection relationship between I2S and MCU
MCU Function Descriptions
PB4 Standby MCU I2S audio output enable, active low, alternated with LD3 signal
PB5 SD MCU I2S SD Signal, alternated with LD4 signal
PB3 SCK MCU I2S SCK Signal, alternated with LD2 signal
PA15 WS MCU I2S WS Signal, alternated with LD1 function
PC7 MCLK MCU I2S MCLK Signal
The connection relationship between Ethernet PHY and MCU is shown in the table below:
Table 18. Connection relationship between Ethernet PHY and MCU
MCU Function Descriptions
PA2 MDIO PHY Serial management data input/output
PC1 MDC PHY Serial management clock
PB12 TD0 Transmit data 0, alternated with SPI2_NSS0 through switch SW2
PB13 TD1 Transmit data 1
PC4 RD0 Receive data 0
PC5 RD1 Receive data 1
PB11 TX_EN Transmit enable
PA7 CRS_DV Carrier sense / Receive data valid
PC0 INT0 Ethernet PHY Interrupt 0, Active low
PB2 INT1 Ethernet PHY Interrupt1, Active low
PC7 MCLK External 50MHz clock input
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PCB layout
The layout of each part of MM32F3270 EVB on the PCB is introduced according to the peripheral function.
MM32F3270 MCU chip, LDO (3.3V) power regulator, crystal/oscillator and pin signal connection socket
(the socket is not provided and soldered by default when the product leaves the factory) are the basic
parts of MM32F3270 EVB, which are shown in the red markings in the figure below.
Figure 2. MM32F3270 core function layout
The MM32F3270 EVB backup power supply is a CR1210 battery socket, which is shown in the figure below.
Due to logistics and transportation issues, the battery is not provided by default.
Figure 3. Backup battery layout
MM32F3270 Power / LDOOscillator/CrystalMCU Core
MM32F3270 Power / LDOOscillator/CrystalBattery
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MM32F3270 EVB GPIO are composed of four keys and four LEDs. There is no reset button in this system.
If a reset operation is required, it must be realized through the emulator command or power-on again.
The layout is shown in the figure below.
Figure 4. GPIO device layout
MM32F3270 EVB UART is equipped with three sets of interfaces :
1. Emulator virtual serial port
2. The two sockets CN7 and CN9 connected to the edge of the PCB
The layout is shown in the figure below.
Figure 5. UART device layout
MM32F3270 Power / LDOOscillator/CrystalKey / LED
MM32F3270 Power / LDOOscillator/CrystalUART
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The MM32F3270 EVB SPI is evaluated in the following methods :
1. SPI Flash
2. Connect to the sockets CN10 on the edge of the PCB
The layout is shown in the figure below.
Figure 6. SPI device layout
MM32F3270 EVB CAN Bus is evaluated in the following methods :
1. CAN Bus driver
2. Terminal matching resistance selection switch
3. Connect to the socket CN15 on the edge of the PCB
The layout is shown in the figure below.
Figure 7. CAN Bus device layout
MM32F3270 Power / LDOOscillator/CrystalSPI
MM32F3270 Power / LDOOscillator/CrystalCAN
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MM32F3270 EVB I2C Bus is connected to a 256Bytes EEPROM. The layout is shown in the figure below.
Figure 8. I2C EEPROM device layout
MM32F3270 EVB I2S audio connects an I2S audio decoder and two mono audio amplifiers, and outputs
to 3.5mm Headphone jack. The layout is shown in the figure below.
Figure 9. I2S Audio device layout
MM32F3270 Power / LDOOscillator/CrystalI2C
MM32F3270 Power / LDOOscillator/CrystalI2S Audio
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MM32F3270 EVB analog input samples three potentiometer input methods to evaluate MCU analog
input performance. The layout is shown in the figure below.
Figure 10. Potentiometer analog level input device layout
MM32F3270 EVB FSMC / LCD connector supports external memory, FPGA and LCDM. The layout is
shown in the figure below.
Figure 11. FSMC/LCD interface device layout
MM32F3270 Power / LDOOscillator/CrystalPotentiometer
MM32F3270 Power / LDOOscillator/CrystalFSMC / LCD
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MM32F3270 EVB SDIO connects to a TF Card socket and supports card insertion detection function. The
layout is shown in the figure below.
Figure 12. SDIO SD/TF Card interface device layout
MM32F3270 EVB PWM realize the function of audio output through simple driver. The layout is shown in
the figure below.
Figure 13. PWM audio output interface device layout
MM32F3270 Power / LDOOscillator/CrystalSDIO
MM32F3270 Power / LDOOscillator/CrystalPWM
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MM32F3270 EVB Ethernet MAC realizes the function of time-sharing operation on two physical interfaces
through different PHY addresses. The layout is shown in the figure below.
Figure 14. Ethernet interface device layout
The MM32F3270 EVB USB socket realizes the Host/Device function through hardware switches. The
layout is shown in the figure below.
Figure 15. USB Host/Device interface device layout
MM32F3270 Power / LDOOscillator/CrystalEthernet
MM32F3270 Power / LDOOscillator/CrystalUSB
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The MM32F3270 EVB alternate function selector switch is used to select PA1 function between analog
input and RMII_RCLK, PB12 between SPI2 NSS and RMII_TD0.The layout is shown in the figure below.
Figure 16. Control switch layout
MM32F3270 EVB on-board emulator, programmer and external emulation debugging connector make
up the function circuit. The layout is shown in the figure below.
Figure 17. Power/debug/download interface device layout
MM32F3270 Power / LDOOscillator/CrystalSwitch
MM32F3270 Power / LDOOscillator/CrystalEmulator
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Schematic diagram
Evaluation board schematic diagram
Figure 18. MM32F3270 EVB schematic diagram-architecture
DAT
0C
MD
DET
CLK
DAT
1D
AT2
DAT
3
SDIO
SDIO
.Sch
nRST
I2S
I2S.
Sch TX
D0
RXD
0
MD
CM
DIO
nRST
TXD
1
RXD
1
CLK
I
CRS_
DV
TX_E
N
INT
AD
R
TXD
0
RXD
0
MD
CM
DIO
nRST
TXD
1
RXD
1
CRS_
DV
TX_E
N
INT
CLK
I
AD
R
C70
104P
VC
C4
GND
2
OUT
3
OE
1
X450
MHz
VD
D
R63
22CL
K50M
Hz
R40
4K7
VD
D
VD
D R58 4K7
R57 4K7
R41 4K7
R54
22R3
822
R55
22R3
322
R36
22
R39
22
SCL
SDA
I2C
I2C.
Sch NS
S0
SCK
MIS
OM
OSI
NSS1
SPI
SPI.S
chCA
N_RX
CA
N_TX
CAN
CAN.
Sch
PWR_
ONCC
1
DM
CC2
DP
USB
USB.
Sch
ADC
2(R
V2)
ADC
1(R
V3)
ADC
3(R
V1)
ADC
ADC.
Sch
K1
K4
LD4
LD3
LD2
LD1
K3
K2
WK
P
LED
&KEY
LED
&KEY
.Sch
TXD
1RX
D1
VD
D
C26
10uF
/16V
nRST
LD5
RED
R9 3K3
2
Vou
t3
Vin
1
LD11
17
U11
LD11
17-3.
3V
C23
104P
RXD
TXD
SWCL
KSW
DIO
RST
DM
DP
Emul
ator
Emul
ator.S
ch
C27
106P
C63
104P
C65
104P
TP1
TP3
TP2
VC
C1
DM
2
DP
3
ID4
GND
5
CN1
Micr
oUSB
VC
C
VC
C
RS
NWE
NOE
CS
LCD_
BL
D[0.
.15]
nRST
LCD
LCD.
Sch
D[0.
.15]
VD
D C60
104 P
R121
10K
C22
104P
C62
104P
C57
104P
C56
104P
C61
104P
C47
104P
C66
104P
C64
104P
VD
D
C25
105P
VD
D
VBAT
X1
X2
C15
20P
C7 20P
R25
510K
R29
510
X1 8MHz
X232
768Hz
PC14
PC15
C16
12P
C8 12P
BAT1
PA0 2 AP
1AP PA3
PA4 6AP
5AP PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
3536
CN2
PA15
GN
D
PB0
VDD
PB15
GN
D
PB1
VDD
PB2
PB3
PB4
PB5
PB6
nRST
PB7
PB8
PB9
VDD
PB10
GN
D
PB11
VBAT
PB12
VDD
PB13
GN
D
PB14
PC0
GN
D
PC15
VDD
2C P1CP PC3
PC4
PC5
PC6
PC7
PC8
PC9
PC10
PC11
PC12
4 1CP3 1CP
PD0
PD15
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PE0
PE15
PE1
3 EP2EP
5 EP4E P PE6
PE7 9EP
8EP
11E P0 1EP
31EP21EP PE
14
TXD
1RX
D1
TXD
2RX
D2
UART
UART
.Sch
mp1
mp6
mp2
mp5
mp3
mp4
DD VDN
G
GN
D
VDD DDV
D NG
DDVD N
G
GN
DVD
D
GN
DVD
D
2 X1X
PF0 2 FP
1FP4F P
3 FP PF5
PF6 8FP
7FP0 1FP
9FP
21FP11FP
41 FP31FP
0GP
51FP PG1
PG2
PG3
PG4
PG5
PG6
PG7
PG8
PG9
PG10
PG11
PG12
PG13
PG14
PG15
BOO
T0
PH2
GN
DVD
D
VDD
GN
D
RXD1
TXD
1VT
ref
1V
CC
2
nJTR
ST3
4
TDI
56
TMS
78
TCK
910
RTC
K11
12
TDO
1314
nRST
1516
DBGR
Q17
18
DBG
AC
K19
20
CN14
VD
D
VC
C
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
3536
CN11
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
3536
CN16
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
3536
CN13
SWD
IOSW
CLK
Spea
ker
Spea
ker
PA0
PA1
PA2
PA3
PA4PA5PA6PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14PA15
PB0
PB15
PB1PB2PB3
PB4PB5PB6PB7
PB8PB9
PB10PB11
PB12
PB13
PB14
PC0
PC15
PC1
PC2
PC3
PC4PC5
PC6
PC7
PC8
PC9
PC10PC11PC12
PC13
PC14
PD0
PD15
PD1PD2PD3PD4PD5
PD6PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PE0
PE15
PE1
PE2
PE3
PE4
PE5
PE6
PE7PE8PE9
PE10PE11PE12PE13PE14
PG0PG1
PG2
PG3
PG4
PG5
PG6
PG7
PG8
PG9PG10PG11PG12PG13PG14
PG15
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
PF8
PF9
PF10
PF11PF12
PF13PF14PF15
PE2
1
PE3
2
PE4
3
PE5
4
PE6
5
VB
AT
6
PC13
7
PC14
8
PC15
9
PF0
10
PF1
11
PF2
12
PF3
13
PF4
14
PF5
15
VSS
16
VD
D17
PF6
18
PF7
19
PF8
20
PF9
21
PF10
22
PH0
23
PH1
24
NRS
T25
PC0
26
PC1
27
PC2
28
PC3
29
VSS
A30
VRE
F-31
VRE
F+32
VDD
A33
PA0
34
PA1
35
PA2
36
PA3 37
VSS 38
VDD 39
PA4 40
PA5 41
PA6 42
PA7 43
PC4 44
PC5 45
PB0 46
PB1 47
PF11 49
PF12 50
VSS 51
VDD 52
PF13 53
PF14 54
PF15 55
PG0 56
PG1 57
PE7 58
PE8 59
PE9 60
VSS 61
VDD 62
PE10 63
PE11 64
PE12 65
PE13 66
PE14 67
PE15 68
PB10 69
PB11 70
VSS 71
VDD 72
PB12
73PB
1374
PB14
75PB
1576
PD8
77PD
978
PD10
79PD
1180
PD12
81PD
1382
VSS
83V
DD
84PD
1485
PD15
86PG
287
PG3
88PG
489
PG5
90PG
691
PG7
92PG
893
VSS
94V
DD
95PC
696
PC7
97PC
898
PC9
99PA
810
0PA
910
1PA
1010
2PA
1110
3PA
1210
4PA
1310
5PH
210
6V
SS10
7V
DD
108
PA14109 PA15110 PC10111 PC11112 PC12113 PD0114 PD1115 PD2116 PD3117 PD4118 PD5119 VSS120 VDD121 PD6122 PD7123 PG9124 PG10125 PG11126 PG12127 PG13128 PG14129 VSS130 VDD131 PG15132 PB3133 PB4134 PB5135 PB6136 PB7137 PH3138 PB8139 PB9140 PE0141 PE1142 VSS143 VDD144
PB2 48
U10
MM3
2F32
77G
9P
BOOT0
X1 X2
PH2
R122
10K
nRST
GND
GND
GND
GND
GN
D
GN
D
GN
D
GND
GND
GND
GN
DVD
D
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
A1
TXD
2RX
D2A2
A3
TXD
1RX
D1
USB_
DMUS
B_DP
SWDI
OSW
CLK
LD1
K1
K2
LD2
LD3
LD4
SCL
SDA
CA
N_RX
CA
N_TXK
3K
4
NSS0
SCK
MIS
OM
OSI
USB_
CC1
USB_
CC2
OSC3
2IOS
C32O
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PC9
PC10
PC11
PC12
PC13
PC14
PC15
FSM
C_D2
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PE15
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
PF8
PF9
PF10
PF11
PF12
PF13
PF14
PF15
PG0
PG1
PG2
PG3
PG4
PG5
PG6
PG7
PG8
PG9
PG10
PG11
PG12
PG13
PG14
PG15
PH2
PH3
ETH_
CRS_
DVET
H_M
DIO
ETH_
RCLK
ETH_
TX_E
NET
H_TD
1ET
H_TD
0
ETH_
INT1
ETH_
INT0
ETH_
MD
C
ETH_
RD0
ETH_
RD1
SD_D
ET
I2S_
MCL
K
SD_C
LK
SD_D
AT3
SD_D
AT2
SD_D
AT1
SD_D
AT0
SD_C
MD
FSM
C_NO
EFS
MC_
NWE
FSM
C_CS
NSS1
FSM
C_RS
FSM
C_D3
FSM
C_D1
3FS
MC_
D14
FSM
C_D1
5
FSM
C_D0
FSM
C_D1
FSM
C_D4
FSM
C_D5
FSM
C_D6
FSM
C_D7
FSM
C_D8
FSM
C_D9
FSM
C_D1
0FS
MC_
D11
FSM
C_D1
2
TXD
3RX
D3
LCD_
BL
PH1
PH0
PC14
PC15
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PB0
PB15
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PC0
PC15
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PC9
PC10
PC11
PC12
PC13
PC14
PD0
PD15
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PE0
PE15
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PG0
PG1
PG2
PG3
PG4
PG5
PG6
PG7
PG8
PG9
PG10
PG11
PG12
PG13
PG14
PG15
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
PF8
PF9
PF10
PF11
PF12
PF13
PF14
PF15
PH2
BOO
T0
X1 X2
TXD
1RX
D1
SWD
IOSW
CLK
CLK5
0MH
z
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D11
D12
D13
D14
D15
MC
LK
PWR_
ON
Conn
ectio
n
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 18 -
Figure 19. MM32F3270 EVB schematic diagram-GPIO
Figure 20. MM32F3270 EVB schematic diagram-UART
LD3
BLUELD4
YELLOW
LD1
REDLD2
GREEN
R93
4K7
R74
3K3
R67
2K2
R35
2K2R32 1K
R60 1K
R73 1K
R88 1KK4
K3
K2
K1 VDDVDD
R1231M
K1
K4
LD4
LD3
LD2
LD1
K3
K2
C73
102PR1261M
WKP
R8 510R12 510TXD1
RXD1
R24 510R26 510TXD2
RXD2
123
CN7
123
CN9
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 19 -
Figure 21. MM32F3270 EVB schematic diagram-SPI
Figure 22. MM32F3270 EVB schematic diagram-CAN Bus
NSS0
SCK
MISO
MOSI
C48104P
VDD
S1
DO2
WP3
GND4 DI 5
C 6
HOLD 7
VCC 8U12 25P80
R72100K R69
100K
VDD
R87 51R86 51
R85 51
R81 51
MOSI
SCKMISO
NSS1
12345 CN10
XH2.54V-5P
R68 51
R44 51R61 51R65 51
NSS1
MOSISCK
MISO
CAN_RX
CAN_TX
C33104P
VCC
VDD
TXD1
GND2
VCC3
RXD4 VIO 5
CANL 6
CANH 7
S 8
U13 TJF1051R82120
12
CN15
R71 51
R70 51
SW3MSK12C01
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 20 -
Figure 23. MM32F3270 EVB schematic diagram-I2C Bus
Figure 24. MM32F3270 EVB schematic diagram-SDIO/TF Card
R344K7
R664K7
E0 1
E1 2
E2 3
VSS 4
SDA5
SCL6
WC7
VCC 8U9 24C02
C21104P
VDD
SCL
SDA
R59 51
R64 51
DAT0
CMD
DET
CLK
C72104P
C71105P
nCS/DAT32MOSI/CMD3RSV/DAT21
VDD4SCLK/CLK5GND6MISO/DAT07RSV/DAT18
G40 G30 G20 G10
9
10
CN17 TF_SD
R84
3K3
LD12
RED
DAT1
DAT2DAT3
VDD
R77 22R79 22R80 22
R78 22
R75 22R76 22
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 21 -
Figure 25. MM32F3270 EVB schematic diagram-I2S Audio
WS
SD SCK
C18
104P
MC
LK
VDD
SDIN
1
DEM
/SC
K2
LRC
K3
MC
LK4
VQ
5FI
LT+
6AO
UTL
7
GND 8VA9
AOU
TR10
U8
CS4
344
C19
104P
C20
105P
C17
106P
32 1CN
4He
adph
one
C10
105P
C34
471P
R97
20K
C11
105P
R102
20K
R101
20K
R109
510
R110
510
C42
222P
C43
222P
Stan
dby
1
Bypa
ss2
Vin
+3
Vin
-4
Uou
t15
VCC
6
GN D
7
Vou
t28
U4
TS48
71
C9
105P
C4
106P
C32
105P
VCC
C36
471P
R98
20K
Stan
dby
1
Bypa
ss2
Vin
+3
Vin
-4
Uou
t15
VCC
6
GND
7
Vou
t28
U5
TS48
71
C6
105P
C5
106P
C35
104P
VCC
R48
22R4
922
R50
22R5
122
VCC
R47
22St
andb
y
R108
10K
VCC
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 22 -
Figure 26. MM32F3270 EVB schematic diagram-Analog Input
Figure 27. MM32F3270 EVB schematic diagram-FSMC/LCD Interface
C12104P
VDD
RV110K(3296w)
R18
1K
VDD
ADC2(RV2)
ADC1(RV3)
ADC3(RV1)
C14104P
RV310K
R20
1K
VDD
C13104P
RV210K
R19
1K
1234
RESET5
DE24
VDD25
PD0 26
GND27
VSYNC28 BLC/DotClk23
PD9 22
PD1 6
PD2 7
PD3 8
PD4 9
PD5 10
PD6 11
PD7 12
PD8 13
PD10 14
PD11 15
PD12 16
PD13 17
PD14 18
PD15 19
PD16 20
PD17 21HSYNC(SDO)29
SDA (SDI)30
XL 31
XR 32
YD 33
YU 34C49104P
VDD
R91 51
R92 51R89 51RS
NWENOE
CS
LCD_BL
D[0..15]D[0..15]
nRST
R90 51
R62 51
R94 51
D0D1D2D3D4D5D6D7D8D9D10D11D12D13D14D15
CSRSWR/SCLRD
CN12 MDM2803
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 23 -
Figure 28. MM32F3270 EVB schematic diagram-Ethernet (1)
VDD
2A1
LED
2/nI
NTS
EL2
LED
1/R
EGOF
F3
XTA
L24
XTA
L1/C
LKIN
5VD
DCR
6
RXD
1/M
ODE
17
RXD
0/M
ODE
08
VDD
IO9
RXER
/PHY
AD0
10CR
S_DV
/MO
DE2
11
MD
IO12
MD
C13
nIN
T/R
EFC
LKO
14
nRST
15
TXEN
16
TXD
017
TXD
118
VDD
1A19
TXN
20
TXP
21
RXN
22
RXP
23
RBIA
S24
VSS
0
U6
LAN8
720
VDD
C51
104P
R27
12K
C58
106P
VDD
C55
104P
C50
104P
R117
100
C52
106P
1 2 36 7 8
9 10 11 14 15 16
TR1
TS81
21C
C69
104P
VDD
1 2 3 4 5 6 7 8
CN5
RJ4
5
R95
75R9
975
R119
10K
R52
22
R10351
R11151
R10451
R11251
R53
22R3
722
C37
102P
LD8
GR
EEN
LD9
YELL
OW
R4
4K7
R5
4K7
VDD
CLK
I
TXD
0
RXD
0
MD
CM
DIO
nRST
TXD
1
RXD
1
INT
CRS_
DV
TX_E
N
ADR
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 24 -
Figure 29. MM32F3270 EVB schematic diagram-Ethernet (2)
VDD
2A1
LED
2/nI
NTS
EL2
LED
1/R
EGOF
F3
XTA
L24
XTA
L1/C
LKIN
5VD
DCR
6
RXD
1/M
ODE
17
RXD
0/M
ODE
08
VDD
IO9
RXER
/PHY
AD0
10CR
S_DV
/MO
DE2
11
MD
IO12
MD
C13
nIN
T/R
EFC
LKO
14
nRST
15
TXEN
16
TXD
017
TXD
118
VDD
1A19
TXN
20
TXP
21
RXN
22
RXP
23
RBIA
S24
VSS
0
U7
LAN8
720
TXD
0
RXD
0
MD
CM
DIO
nRST
TXD
1
RXD
1
VDD
C53
104P
R28
12K
C59
106P
INT
CRS_
DV
TX_E
N
VDD
C68
104P
C67
104P
R118
100
C54
106P
1 2 36 7 8
9 10 11 14 15 16
TR2
TS81
21C
C46
104P
VDD
1 2 3 4 5 6 7 8
CN6
RJ4
5
R96
75R1
0075
R120
10K
CLK
I
R10551
R11351
R10651
R11451
R42
22R4
322
C38
102P
LD10
GR
EEN
LD11
YELL
OW
R6
4K7
R7
4K7
VDD
R56
22
ADR
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 25 -
Figure 30. MM32F3270 EVB schematic diagram-USB Host/Device
Figure 31. MM32F3270 EVB schematic diagram-PWM Speaker
PWR_ON
R124 22R125 22
OUT 1
GND 2OC3
EN4
IN5U1
TPS2041B
VCC
C2104P
C3106P
R31M
VBUS
R464K7
R3136K
VDD
R454K7
R3036K
VDD
GND A1
VBUS A4CC1 A5D1+ A6D1- A7SBU1 A8VBUS A9
GND A12
GNDB12
VBUSB9 SBU2B8 D-B7 D+B6 CC2B5 VBUSB4
GNDB1
00
CN3USB_C_16PIN
SW1
MSS22C02Device
Host
CC1
DMCC2
DP
SP1
VDD
D21N4148
T1SI2302C28
104P R8310K
Speaker
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 26 -
Figure 32. MM32F3270 EVB schematic diagram-signal connection
A1 TXD2
RXD2 A2 A3 TXD1
RXD1
USB_
DMUS
B_DP
SWDI
OSW
CLK
LD1
K1 K2 LD2
LD3
LD4
SCL
SDA
CAN_
RXCA
N_TX
K3K4NSS0
SCK
MIS
OM
OSI
USB_
CC1
USB_
CC2
PWR_
ON
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PC9
PC10
PC11
PC12
PC13
PC14
PC15
FSM
C_D2
PA0/
TIM
2_C
H1/
TIM
2_ET
R/T
IM5_
CH
1/TI
M8_
ETR
/UAR
T2_C
TS/U
ART4
_TX/
ETH
_MII_
CR
S/AD
C12
3_IN
0/C
OM
P12_
INP
0/C
OM
P1_I
NM
2/W
KP0
PA1
/TIM
2_C
H2/
TIM
5_C
H2/
UA
RT2
_RTS
/UAR
T4_R
X/ET
H_M
II_R
X_C
LK/E
TH_R
MII_
REF
_C
LK/A
DC
123_
IN1/
CO
MP1
2_IN
P1P
A2/T
IM2_
CH
3/TI
M5_
CH
3/U
ART2
_TX/
CP
T2_O
UT/
ETH
_MD
IO/A
DC
123_
IN2/
CO
MP1
2_IN
P2/C
OM
P2_I
NM
2/W
KP2
PA3
/TIM
2_C
H4/
TIM
5_C
H4/
UA
RT2
_RX/
ETH
_CO
L/AD
C12
3_IN
3/C
OM
P12_
INP
3P
A4/S
PI1_
NS
S/I2
S1_
WS/
SPI
3_N
SS/
I2S
3_W
S/U
ART5
_TX/
ADC
12_I
N4
/DA
C1_
OU
T/C
OM
P12_
INM
0P
A5/T
IM2_
CH
1/TI
M2_
ETR
/TIM
8_C
H1N
/SPI
1_SC
K/I2
S1_C
K/U
ART5
_RX/
ADC
12_I
N5
/DAC
2_O
UT/
CO
MP1
2_IN
M1
PA6
/TIM
1_B
KIN
/TIM
3_C
H1/
TIM
8_B
KIN
/SPI
1_M
ISO
/I2S1
_MC
K/C
PT1
_OU
T/AD
C12
_IN
6P
A7/T
IM1_
CH
1N/T
IM3_
CH
2/TI
M8_
CH
1N/S
PI1_
MO
SI/I2
S1_S
D/C
RS
_SYN
C/E
TH_M
II_R
X_D
V/ET
H_R
MII_
CR
S_D
V/A
DC
12_I
N7
PA8
/MC
O1/
TIM
1_C
H1
PA9
/TIM
1_C
H2/
I2C
1_S
CL/
UA
RT1
_TX/
US
B_V
BUS
PA1
0/TI
M1_
CH
3/I2
C1_
SD
A/U
ART1
_RX/
US
B_ID
PA1
1/TI
M1_
CH
4/U
AR
T1_C
TS/C
PT1
_OU
T/C
AN
1_R
X/U
SBD
MPA
12/T
IM1_
ETR
/UAR
T1_R
TS/C
PT2_
OU
T/C
AN1_
TX/U
SBD
PP
A13/
JTM
S_S
WD
IO/U
SB_
VB
US_
ON
PA1
4/JT
CK_
SW
CLK
/I2C
1_SD
AP
A15/
JTD
I/TIM
2_C
H1/
TIM
2_E
TR/I2
C1_
SC
L/S
PI1_
NS
S/I2
S1_W
S/S
PI3_
NS
S/I2
S3_W
S
PB0
/TIM
1_C
H2N
/TIM
3_C
H3/
TIM
8_C
H2N
/UAR
T6_T
X/E
TH_M
II_R
XD2/
ADC
12_I
N8
PB1
/TIM
1_C
H3N
/TIM
3_C
H4/
TIM
8_C
H3N
/UAR
T6_R
X/ET
H_M
II_R
XD3/
ADC
123_
IN9
PB2
/BO
OT1
PB3/
JTD
O/T
RAC
ESW
O/T
IM2_
CH
2/SP
I1_S
CK
/I2S1
_CKS
PI3
_SC
K/I2
S3_C
KP
B4/
NJT
RST
/TIM
3_C
H1/
SP
I1_M
ISO
/I2S
1_M
CK
/SP
I3_M
ISO
/I2S
3_M
CK
PB5/
TIM
3_C
H2/
SPI1
_MO
SI/I2
S1_S
D/S
PI3
_MO
S/I2
S3_S
D/W
KP4
PB6
/TIM
4_C
H1/
I2C
1_S
CL/
UA
RT1
_TX/
UAR
T7_T
XP
B7/T
IM4_
CH
2/I2
C1_
SD
A/U
ART
1_R
X/U
ART
7_R
X/FM
C_N
ADV
PB
8/TI
M4_
CH
3/I2
C1_
SC
L/C
PT1_
OU
T/C
AN1_
RX/
ETH
_MII_
TXD
3P
B9/T
IM4_
CH
4/I2
C1_
SDA/
SPI
2_N
SS/
I2S2
_WS/
CPT
2_O
UT/
CAN
1_TX
PB1
0/TI
M2_
CH
3/I2
C2_
SC
L/S
PI2_
SCK
/I2S2
_CK
/UA
RT3
_TX/
ETH
_MII_
RX_
ERPB
11/T
IM2_
CH
4/I2
C2_
SDA
/UAR
T3_R
X/ET
H_M
II_TX
_EN
/ETH
_RM
II _TX
_EN
PB1
2/TI
M1_
BK
IN/S
PI2_
NS
S/I2
S2_W
S/E
TH_M
II_TX
D0/
ETH
_RM
II_TX
D0
PB1
3/TI
M1_
CH
1N/S
PI2_
SCK
/I2S
2_C
K/U
ART3
_CTS
/ETH
_MII_
TXD
1/ET
H_R
MII_
TXD
1P
B14/
TIM
1_C
H2N
/TIM
8_C
H2N
/SPI
2_M
ISO
/I2S
2_M
CK/
UA
RT3
_RT S
PB
15/T
IM1_
CH
3N/T
IM8_
CH
3N/S
PI2
_MO
SI/I
2S2_
SD
/WK
P5
PC
0/I2
C1_
SCL/
AD
C12
3_IN
10P
C1/
I2C
1_SD
A/E
TH_M
DC
/AD
C12
3_IN
11P
C2/
I2C
2_SC
L/S
PI2_
MIS
O/I2
S2_
MC
K/E
TH_M
II_TX
D2/
AD
C12
3_IN
12P
C3/
I2C
2_SD
A/S
PI2_
MO
SI/I
2S2_
SD/E
TH_M
II_TX
_CLK
/AD
C12
3_IN
13PC
4/ET
H_M
II_R
XD0/
ETH
_RM
II_R
XD0/
ADC
23_1
4PC
5/ET
H_M
II_R
XD1/
ETH
_RM
II_R
XD1/
ADC
23_1
5/W
KP3
PC
6/TI
M3_
CH
1/TI
M8_
CH
1/I2
C1_
SC
L/S
PI2_
MIS
O/I2
S2_M
CK
/UAR
T6_T
XP
C7/
TIM
3_C
H2/
TIM
8_C
H2/
I2C
1_S
DA/
SPI
3_M
ISO
/I2S3
_MC
K/U
AR
T6_R
XP
C8/
TIM
3_C
H3/
TIM
8_C
H3/
I2C
2_SC
L/SD
IO_D
0PC
9/M
CO
2/TI
M3_
CH
4/TI
M8_
CH
4/I2
C2_
SD
A/S
DIO
_D1
PC
10/S
PI3_
SCK
/I2S
3_C
K/U
ART3
_TX/
UAR
T4_T
X/SD
IO_D
2P
C11
/SPI
3_M
ISO
/I2S
3_M
CK/
UA
RT3
_RX/
UAR
T4_R
X/SD
IO_D
3P
C12
/SPI
3_M
OSI
/UAR
T5_T
X/SD
IO_C
KP
C13/
TAM
P-R
TC/W
KP1
PC
14/O
SC
32_I
NP
C15
/O
SC
32_
OU
T
PD
0/U
ART8
_TX/
CA
N1_
RX/
FSM
C_D
A2P
D1/
UAR
T8_R
X/C
AN
1_TX
/FSM
C_D
A3P
D2/
TIM
3_E
TR/U
ART5
_RX/
SD
IO_C
MD
PD
3/S
PI2_
SC
K/I2
S2_C
K/U
ART2
_CTS
/FS
MC
_CLK
PD
4/S
PI3_
SC
K/I2
S3_C
K/U
ART2
_RTS
/FS
MC
_NO
EP
D5/
SPI
3_M
ISO
/I2S3
_MC
K/U
AR
T2_T
X/FS
MC
_NW
EPD
6/S
PI3
_MO
SI/I
2S3_
SD
/UA
RT2
_RX/
FSM
C_N
WAI
T1P
D7/S
PI3_
NS
S/I2
S3_
WS
/FS
MC
_NE
1P
D8/
UAR
T3_T
X/FS
MC
_DA1
3P
D9/
UAR
T3_R
X/FS
MC
_DA
14P
D10
/I2C
1_SC
L/FS
MC
_DA1
5P
D11
/I2C
1_SD
A/U
ART3
_CTS
/FSM
C_A
16
PD
13/T
IM4_
CH
2/S
PI3_
MIS
O/I2
S3_
MC
K/F
SMC
_A18
PD
12/T
IM4_
CH
1/S
PI3_
SC
K/I2
S3_C
K/U
ART3
_RTS
/FS
MC
_A17
PD
14/T
IM4_
CH
3/S
PI3_
MO
SI/F
SM
C_D
A0P
D15
/TIM
4_C
H4/
SPI
3_N
SS/
I2S3
_WS
/FSM
C_D
A1
PE0
/TIM
4_ET
R/U
AR
T8_R
X/FS
MC
_NB
L0P
E1/U
AR
T8_T
X/FS
MC
_NB
L1P
E2/T
RA
CE
CLK
/SP
I2_S
CK
/I2S
2_C
K/E
TH_M
II_TX
D3/
FSM
C_A
23P
E3/T
RA
CE
D0/S
PI2_
NS
S/I2
S2_W
S/F
SM
C_A
19P
E4/T
RA
CE
D1/S
PI2_
NS
S/I2
S2_W
S/F
SM
C_A
20P
E5/T
RA
CE
D2/I2
C2_
SCL
/SPI
2_M
ISO
/I2S
2_M
CK
/FSM
C_A
21P
E6/
TRAC
ED
3/I2
C2_
SD
A/S
PI2
_MO
SI/I
2S2_
SD
/FS
MC
_A22
PE7
/TIM
1_ET
R/U
AR
T7_R
X/FS
MC
_DA
4P
E8/T
IM1_
CH
1N/U
ART
7_TX
/FS
MC
_DA
5P
E9/T
IM1_
CH
1/F
SMC
_DA6
PE1
0/TI
M1_
CH
2N/F
SMC
_DA7
PE1
1/TI
M1_
CH
2/S
PI1
_NS
S/I2
S1_
WS
/FS
MC
_DA8
PE1
3/TI
M1_
CH
3/S
PI1_
MIS
O/I2
S1_M
CK/
FSM
C_D
A10
PE1
2 /TI
M1_
CH
3N/S
PI1
_SC
K/I2
S1_
CK
/FS
MC
_DA9
PE
14/T
IM1_
CH
4/S
PI1
_MO
SI/I
2S1_
SD
/FS
MC
_DA
11P
E15/
TIM
1_B
KIN
/FS
MC
_DA1
2
PF0
/FS
MC
_A0
PF1
/FS
MC
_A1
PF2
/FS
MC
_A2
PF3
/FS
MC
_A3
PF4
/FS
MC
_A4
PF5
/FS
MC
_A5
PF6
/AD
C3_
IN4
PF7
/AD
C3_
IN5
PF8
/AD
C3_
IN6
PF9
/AD
C3_
IN7
PF1
0/AD
C3_
IN8
PF1
1
PF1
3/FS
MC
_A7
PF1
2/FS
MC
_A6
PF1
4/FS
MC
_A8
PF1
5 /FS
MC
_A9
PG
0/F
SM
C_A
10P
G1/
FS
MC
_A11
PG
2/F
SM
C_A
12P
G3/
FS
MC
_A13
PG
4/F
SM
C_A
14P
G5/
FS
MC
_A15
PG
6P
G7
PG
8P
G9/
FSM
C_N
E2P
G10
/FS
MC
_NE3
PG
11
PG
13/F
SM
C_A
24P
G12
/FS
MC
_NE4
PG
14/F
SM
C_A
25P
G15
PH
2P
H3/
BOO
T0
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PE15
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
PF8
PF9
PF10
PF11
PF12
PF13
PF14
PF15
PG0
PG1
PG2
PG3
PG4
PG5
PG6
PG7
PG8
PG9
PG10
PG11
PG12
PG13
PG14
PG15
PH0
PH1
I2S_
WS
ETH_
CRS
_DV
ETH_
MDI
O
ETH_
RCL
K
ETH_
TX_E
N
ETH_
TD1
ETH_
TD0
ETH_
INT1
SW
2M
SS2
2C02
ETH_
INT0
ETH_
MDC
ETH_
RD0
ETH_
RD1
SD_D
ETI2
S_M
CLK
SD_C
LKSD
_DAT
3SD
_DAT
2SD
_DAT
1SD
_DAT
0
SD_C
MD
FSM
C_N
O EFS
MC_
NWE
FSM
C_C S
NSS1
FSM
C_RS
FSM
C_D3
FSM
C_D1
3FS
MC_
D14
FSM
C_D1
5
FSM
C_D0
FSM
C_D 1
FSM
C_D4
FSM
C_D5
FSM
C_D6
FSM
C_D7
FSM
C_D8
FSM
C_D9
FSM
C_D1
0FS
MC_
D11
FSM
C_D1
2
TXD3
RXD3
LCD_
BL
Wak
eup
PH2
PH3
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 27 -
MM32-LINK-OB schematic
The function of the MM32-LINK-OB emulator embedded in MM32F3270 EVB is exactly the same as that
of the independent standard MM32-LINK emulator, and the firmware upgrade code is also the same. The
embedded MM32-LINK emualtor share the common power supply with the evaluation target MCU.
When users emulate or download something through emulator, one end of the USB cable should be
inserted into the CN1 socket, and the other end should be connected to the USB port of PC. When the
power of emulator works normally, the power indicator light LD5 would be on. As the USB connection
indicator, LD6 would turn off from red and LD7 would turn to green when MM32-LINK-OB is successfully
connected to the computer.
Figure 33. MM32F3270 EVB schematic diagram-MM32-LINK-OB
RXDTXD
VDD _E
LED1
DM
R110K
DP
R23K3
tSW
CLK
LED2
VDD_E
VDD_
E
VDD _E VDD_E
C41104P
R107100K
VDD_
E
X1_E
X2_E
VDD _E
C4420P
LED1
C4520P
X1_E
R115 510K
X2_E
R116510
tRST
C39104P
C31104P
C29104P
GND
GND
GND
LD7RED
LD6GREEN
GND
GNDLED2
tIC
R2110K
tSW
DIO
R2210K
tSW
O
VDD
SWDIO_E
SWCL
K_E
RST_E
Vin3 Vout 1
2
XC6206-SOT23
U2XC6206-3.3V
C110uF/16V
C30106P
VCC
SPK
oVD
tVD
tVC
WEAKU P
R13 2K2R14 51
R15100K
VBA T1
PC132
PC143
PC154
PD0_OSCI5
PD1_OSCO6
NRST7
VSSA8
VDD A9
PA010
PA111
PA212
PA3
13
PA4
14
PA5
15
PA6
16
PA7
17
PB0
18
PB1
19
PB2
20
PB10
21
PB11
22
DVSS
23
VDD
24
PB12 25PB13 26PB14 27PB15 28PA8 29PA9 30PA10 31PA11 32PA12 33PA13 34VSS 35VDD 36
PA14
37PA
1538
PB3
39PB
440
PB5
41PB
642
PB7
43B
OO
T044
PB8
45PB
946
VSS
47VD
D48
U3MM32L373PF
SWCLKSWDIO
RSTR16 51R17 51R23 51
D1
1N4148
C40104P
C24104P
VDD_E
VDDCLK
DIOGNDRST
CN8 SWD
SWDIO_ESWCLK_E
GND
VDD_E
RST_E
X3 8MHZ
DMDPR10 22
R11 22
GND
TP4
TP5
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 28 -
Configuration
Emulator configuration The function of the MM32-LINK-OB emulator embedded in MM32F3270 EVB is the same as that of the
independent MM32-LINK, and the software configuration method is also the same.
The initial default state of MM32-LINK is shown in the figure below.
Figure 34. MM32-LINK-OB configuration dialog
Programmer configuration Please refer to "MM32-LINK Programmer User Manual", download link:
http://www.mindmotion.com.cn/download.aspx?cid=1243
Insight Series MM32F3270 Evaluation Board User Guide v0.93
WWW.MM32MCU.COM - 29 -
History
Release time Revision Update
2021/01/20 V0.90 Initial version
2021/02/18 V0.91 Modify text and unit errors
2021/02/20 V0.92 Modify text and unit errors
2021/02/21 V0.93 Add Ethernet PHY connection relationship table
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