Connectors UM2324
30/44 UM2324 Rev 2
Table 12. Arduino connector pinout
Connector
Pin
number
Pin
name
Signal name STM32 pin Function
CN6
1 NC - - Reserved for test
2 IOREF - - I/O reference
3 NRST NRST NRST RESET
4 3V3 - - 3.3 V input/output
5 5V - - 5 V output
6GND - - GND
7GND - - GND
8 VIN - - 7 V to 12 V power input
CN8
1 A0 ADC PA0 ARD_A0_IN0
2 A1 ADC PA1 ARD_A1_IN1
3 A2 ADC PA4 ARD_A2_IN4
4 A3 ADC PB1 ARD_A3_IN9
5 A4 ADC PB9 or PB11 ARD_A4_IN15|| I2C_1_SCL
6 A5 ADC PB8 or PB12 ARD_A5_IN16|| I2C_1_SDA
CN5
10 SCL/D15 ARD_D15 PB8 I2C_1_SCL
9 SDA/D14 ARD_D14 PB9 I2C_1_SDA
8 AVDD VREF+ - VREF+
7GND - - GND
6 SCK/D13 ARD_D13 PA5 SPI_1_SCK
5 MISO/D12 ARD_D12 PA6 SPI_1_MISO
4 PWM/MOSI/D11 ARD_D11 PA7 SPI_1_MOSI || TIM_14_CH1
3 PWM/CS/D10 ARD_D10 PB0 SPI_1_NSS || TIM_3_CH3
2 PWM/D9 ARD_D9 PC7 TIM_3_CH2
1 D8 ARD_D8 PA9 IO
CN9
8 D7 ARD_D7 PA8 IO
7 PWM/D6 ARD_D6 PB14 TIM_15_CH1
6 PWM/D5 ARD_D5 PB4 TIM_3_CH1
5 D4 ARD_D4 PB5 IO
4 PWM/D3 ARD_D3 PB3 TIM_1_CH2
3 D2 ARD_D2 PA10 IO
2 TX/D1 ARD_D1 PC4 UART_1_TX
1 RX/D0 ARD_D0 PC5 UART_1_RX
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