Datasheet

STM32F050xx Pinouts and pin description
Doc ID 023683 Rev 1 31/97
Table 10. Alternate functions selected through GPIOB_AFR registers for port B
Pin name AF0 AF1 AF2 AF3
PB0 EVENTOUT TIM3_CH3 TIM1_CH2N
PB1 TIM14_CH1 TIM3_CH4 TIM1_CH3N
PB2
PB3 SPI1_SCK, I2S1_CK EVENTOUT TIM2_CH2
PB4 SPI1_MISO, I2S1_MCK TIM3_CH1 EVENTOUT
PB5 SPI1_MOSI, I2S1_SD TIM3_CH2 TIM16_BKIN I2C1_SMBA
PB6 USART1_TX I2C1_SCL TIM16_CH1N
PB7 USART1_RX I2C1_SDA TIM17_CH1N
PB8 I2C1_SCL TIM16_CH1
PB9 IR_OUT I2C1_SDA TIM17_CH1 EVENTOUT
PB10 I2C1_SCL
(1)
TIM2_CH3
PB11 EVENTOUT I2C1_SDA
(1)
TIM2_CH4
PB12 SPI1_NSS
(1)
EVENTOUT TIM1_BKIN
PB13 SPI1_SCK
(1)
TIM1_CH1N
PB14 SPI1_MISO
(1)
TIM1_CH2N
PB15 SPI1_MOSI
(1)
TIM1_CH3N
1. This alternate feature is available on standard dies only.