Connector Pin number Pin name Signal name
STM32 pin
(1)
Function
(1)
CN5
10 SCL/D15 ARD_D15 PB8 I2C1_SCL
9 SDA/D14 ARD_D14 PB9 I2C1_SDA
8 VREFP VREFP VREF+ Voltage reference
7 GND - - GND
6 SCK/D13 ARD_D13 PA5 SPI1_SCK
5 MISO/D12 ARD_D12 PA6 SPI1_MISO
4 PWM/MOSI/D11 ARD_D11 PA7 TIM3_CH2/SPI1_MOSI
3 PWM/CS/D10 ARD_D10 PB6 TIM4_CH1/SPIx_CS
2 PWM/D9 ARD_D9 PC7 TIM3_CH2 or TIM8_CH2
1 D8 ARD_D8 PA9 IO
CN9
8 D7 ARD_D7 PA8 IO
7 PWM/D6 ARD_D6 PB10 TIM2_CH3
6 PWM/D5 ARD_D5 PB4 TIM3_CH1
5 D4 ARD_D4 PB5 IO
4 PWM/D3 ARD_D3 PB3 TIM2_CH2
3 D2 ARD_D2 PA10 IO
2 TX/D1 ARD_D1
PA2 /
PC4
LPUSART1_TX /
USART1_TX
1 RX/D0 ARD_D0
PA3 /
PC5
LPUSART1_RX /
USART1_RX
1. Default configuration is in bold.
7.4
ST morpho connectors CN7 and CN10
ST morpho connectors CN7 and CN10 are male pin headers accessible on both sides of the board. All signals
and power pins of the STM32G4 MCU are available on the morpho connectors. These connectors can also be
probed by an oscilloscope, logical analyzer, or voltmeter.
UM2505
ST morpho connectors CN7 and CN10
UM2505 - Rev 2
page 31/43
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