Table 9. Arduino
™
connectors pinout
Connector Pin number Pin name STM32G0 MCU pin Function
CN3
1 D1 PB6 USART1_TX
2 D0 PB7 USART1_RX
3 NRST PF2/NRST RESET or USER button
4 GND - Ground
5 D2 PA15 -
6 D3 PB1 TIM3_CH4
7 D4 PA10 TIM1_CH3 / I2C1_SDA
8 D5 PA9 TIM1_CH2 / I2C1_SCL
9 D6 PB0 TIM3_CH2
10 D7 PB2 -
11 D8 PB8 -
12 D9 PA8 TIM1_CH1
13 D10 PB9
SPI1_CS
(1)
/ TIM17_CH1
14 D11 PB5 SPI1_MOSI / TIM3_CH2
15 D12 PB4 SPI1_MISO
CN4
1 VIN - Power input
2 GND - Ground
3 NRST PF2/NRST RESET or USER button
4 +5V - 5V input/output
5 A7 PA7 ADC_IN7
6 A6 PA6 ADC_IN6
7 A5 PA11 ADC_IN15 / I2C2_SCL
8 A4 PA12 ADC_IN16 / I2C2_SDA
9 A3 PA5 ADC_IN5
10 A2 PA4 ADC_IN4
11 A1 PA1 ADC_IN1
12 A0 PA0 ADC_IN0
13 AREF - AVDD
14 +3V3 - 3V3 input/output
15 D13 PB3 SPI1_SCK
1. SPI_CS is made by GPIO.
UM2591
Arduino™ Nano V3 connectors CN3 and CN4
UM2591 - Rev 1
page 17/26