STM32 development board

pinout

IO voltage

The "VCCIO" voltage can be set with the jumper "5V/3.3V"

Note that this is "power for the slave device", it does not imply that the outgoing signals will have a 5V level (that's always 3.3V), or that the pins are 5V tolerant.

UART

(not all pin numbers are typed out fully).

• 1 GND
• PA10 RX
• PA9 TX
• 4 VCCIO

I2C1

(not all pin numbers are typed out fully).

• 1 GND
• PB7 SDA
• PB6 SCL
• 4 VCCIO

I2C2

(not all pin numbers are typed out fully).

• 1 GND
• PB11 SDA
• PB10 SCL
• 4 VCCIO

SPI

See elsewhere on this site.

SV2

General purpose IO connector. (not all pin numbers are typed out fully).

• 1 GND
• 2 GND
• 3 PA0
• PA1
• PA2
• PA3
• PA4
• PA5
• PA6
• PA7
• PA8
• PA15
• PB0
• PB1
• PD2
• PB5
• PB8
• PB9
• 19 VCCIO
• 20 VCCIO

SV3

General purpose IO connector.

• 1 GND
• 2 GND
• 3 PC0
• 4 PC1
• 5 PC2
• 6 PC3
• 7 PC4
• 8 PC5
• 9 PC6
• 10 PC7
• 11 PC8
• 12 PC9
• 13 PC10
• 14 PC11
• 15 PC12
• 16 PC13
• 17 PC14
• 18 PC15
• 19 VCCIO
• 20 VCCIO

SWD

• 1 VCC 3.3V
• 2 SWCK PA14
• 3 GND
• 4 SWDAT PA13
• 5 NRST
• 6 BOOT0