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Board Entry Info

Generic BoardPkgProduct LineFlashRAMCortexFPUCPUWirelessUSBCAN/FDCANETHSVD
Generic U031G6YxYSTM32U031xx32 KB12 KBCortex-M0+NoSingle CPUNoNoNoNoSTM32U031.svd
Generic U031G8YxYSTM32U031xx64 KB12 KBCortex-M0+NoSingle CPUNoNoNoNoSTM32U031.svd

See more info in the STM32duino repository

PWM Timer Pins

Pin PWM Timer Channel Generic label
PA_0 TIM2 1 D0/A0
PA_1 (no. alternatives: 1) TIM2 2 D1/A1
PA_1_ALT1 TIM15 1N
PA_2 (no. alternatives: 1) TIM2 3 D2/A2
PA_2_ALT1 TIM15 1
PA_3 (no. alternatives: 1) TIM2 4 D3/A3
PA_3_ALT1 TIM15 2
PA_5 TIM2 1 D5/A5
PA_6 (no. alternatives: 1) TIM3 1 D6/A6
PA_6_ALT1 TIM16 1
PA_7 (no. alternatives: 1) TIM1 1N D7/A7
PA_7_ALT1 TIM3 2
PA_8 TIM1 1 D8
PA_9 TIM1 2 D9
PA_10 TIM1 3 D10
PA_11 TIM1 4 D11
PB_0 (no. alternatives: 1) TIM1 2N D15/A8
PB_0_ALT1 TIM3 3
PB_1 (no. alternatives: 1) TIM1 3N D16/A9
PB_1_ALT1 TIM3 4
PB_5 TIM3 2 D17
PB_6 TIM16 1N D18

ADC Pins

Pin ADC Channel Generic label
PA_0 ADC1 4 D0/A0
PA_1 ADC1 5 D1/A1
PA_2 ADC1 6 D2/A2
PA_3 ADC1 7 D3/A3
PA_4 ADC1 8 D4/A4
PA_5 ADC1 9 D5/A5
PA_6 ADC1 10 D6/A6
PA_7 ADC1 14 D7/A7
PB_0 ADC1 17 D15/A8
PB_1 ADC1 18 D16/A9

UART Pins

Pin Peripheral Signal Generic label
PA_0 USART4 TX D0/A0
PA_2 (no. alternatives: 1) LPUART1 TX D2/A2
PA_2_ALT1 USART2 TX
PA_5 USART3 TX D5/A5
PA_9 USART1 TX D9
PB_6 (no. alternatives: 1) LPUART2 TX D18
PB_6_ALT1 USART1 TX
PA_1 USART4 RX D1/A1
PA_3 (no. alternatives: 1) LPUART1 RX D3/A3
PA_3_ALT1 USART2 RX
PA_7 USART3 RX D7/A7
PA_10 USART1 RX D10
PB_7 (no. alternatives: 1) LPUART2 RX D19
PB_7_ALT1 USART1 RX
PA_1 USART2 RTS D1/A1
PA_12 USART1 RTS D12
PB_1 (no. alternatives: 2) LPUART1 RTS D16/A9
PB_1_ALT1 LPUART2 RTS
PB_1_ALT2 USART3 RTS
PA_0 USART2 CTS D0/A0
PA_6 (no. alternatives: 1) LPUART1 CTS D6/A6
PA_6_ALT1 USART3 CTS
PA_11 USART1 CTS D11
PB_0 LPUART2 CTS D15/A8
PB_7 (no. alternatives: 1) USART4 CTS D19
PB_7_ALT1 USART1 RX

SPI Pins

Pin Peripheral Signal Generic label
PA_7 SPI1 MOSI D7/A7
PA_12 (no. alternatives: 1) SPI1 MOSI D12
PA_12_ALT1 SPI2 MOSI
PB_5 SPI1 MOSI D17
PA_6 SPI1 MISO D6/A6
PA_11 (no. alternatives: 1) SPI1 MISO D11
PA_11_ALT1 SPI2 MISO
PA_1 (no. alternatives: 1) SPI1 SCLK D1/A1
PA_1_ALT1 SPI2 SCLK
PA_5 SPI1 SCLK D5/A5
PA_4 SPI1 SSEL D4/A4
PA_10 SPI2 SSEL D10
PB_0 SPI1 SSEL D15/A8

I2C Pins

Pin Peripheral Signal Generic label
PA_6 (no. alternatives: 1) I2C2 SDA D6/A6
PA_6_ALT1 I2C3 SDA
PA_10 (no. alternatives: 1) I2C1 SDA D10
PA_10_ALT1 I2C2 SDA
PB_7 (no. alternatives: 1) I2C1 SDA D19
PB_7_ALT1 I2C2 SDA
PA_7 (no. alternatives: 1) I2C2 SCL D7/A7
PA_7_ALT1 I2C3 SCL
PA_9 (no. alternatives: 1) I2C1 SCL D9
PA_9_ALT1 I2C2 SCL
PB_6 (no. alternatives: 1) I2C1 SCL D18
PB_6_ALT1 I2C2 SCL

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