Connector Pin name Signal name STM32 pin Comment
CN13
1 ARD_D8 PG3 IO
2 ARD_D9 PH6 TIM12_CH1
3 ARD_D10 PE11 SPI4_NSS and TIM1_CH2
4 ARD_D11 PE14 SPI4_MOSI and TIM1_CH4
5 ARD_D12 PE13 SPI4_MISO
6 ARD_D13 PE12 SPI4_SCK
7 GND - GND
8 VREFP - VREF+
9 ARD_D14 PA12 I2C5_SDA
10 ARD_D15 PA11 I2C5_SCL
6.17 GPIO expansion connectors
6.17.1 Description
• The GPIO pins can be used as GPIOs or alternate functions. The available alternate functions are listed in
Table 25. GPIO connectors pinout.
• Other functions such as I
2
C, UART, or FDCAN can be mapped on the GPIO connectors, for instance using
the STM32CubeMX tool.
• The GPIO expansion connector CN2 offers Raspberry Pi
®
shields capability.
UM2637
GPIO expansion connectors
UM2637 - Rev 2
page 29/47
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