Datasheet

STM32F051x Pinouts and pin description
Doc ID 022265 Rev 3 31/105
38 - - - PC7 I/O FT TIM3_CH2
39 - - - PC8 I/O FT TIM3_CH3
40 - - - PC9 I/O FT TIM3_CH4
41 29 18 18 PA8 I/O FT
USART1_CK, TIM1_CH1,
EVENTOUT, MCO
42 30 19 19 PA9 I/O FT
USART1_TX, TIM1_CH2,
TIM15_BKIN,
TSC_G4_IO1
43 31 20 20 PA10 I/O FT
USART1_RX, TIM1_CH3,
TIM17_BKIN,
TSC_G4_IO2
44 32 21 21 PA11 I/O FT
USART1_CTS, TIM1_CH4,
COMP1_OUT,
TSC_G4_IO3, EVENTOUT
45 33 22 22 PA12 I/O FT
USART1_RTS, TIM1_ETR,
COMP2_OUT,
TSC_G4_IO4, EVENTOUT
46 34 23 23
PA 13
(SWDAT)
I/O FT
(4)
IR_OUT, SWDAT
47 35 - - PF6 I/O FT I2C2_SCL
48 36 - - PF7 I/O FT I2C2_SDA
49 37 24 24
PA 14
(SWCLK)
I/O FT
(4)
USART2_TX, SWCLK
50 38 25 25 PA15 I/O FT
SPI1_NSS/I2S1_WS,
USART2_RX,
TIM2_CH1_ETR,
EVENTOUT
51 - - - PC10 I/O FT
52 - - - PC11 I/O FT
53 - - - PC12 I/O FT
54 - - - PD2 I/O FT TIM3_ETR
55 39 26 26 PB3 I/O FT
SPI1_SCK/I2S1_CK,
TIM2_CH2, TSC_G5_IO1,
EVENTOUT
56 40 27 27 PB4 I/O FT
SPI1_MISO/I2S1_MCK,
TIM3_CH1, TSC_G5_IO2,
EVENTOUT
Table 13. Pin definitions (continued)
Pin number
Pin name
(function after
reset)
Pin type
I/O structure
Notes
Pin functions
LQFP64 LQFP48 LQFP32
UFQFPN32
Alternate functions Additional functions