Pinouts and pin description
STM32WB55xx STM32WB35xx
Pin
Name (function
after reset)
Table 17. STM32WB35xx pin and ball definitions
Alternate functions
Additional functions
1
VBAT
S
-
-
-
2 PC14-OSC32_IN I/O FT (1) (2) CM4_EVENTOUT
3 PC15-OSC32_OUT I/O FT (1) (2) CM4_EVENTOUT
4
PH3-BOOT0
I/O FT
- CM4_EVENTOUT, LSCO(3)
-
OSC32_IN
OSC32_OUT
-
TIM1_CH2N, SAI1_PDM_CK1,
5
PB8
I/O FT_f
-
I2C1_SCL, QUADSPI_BK1_IO1,
SAI1_MCLK_A, TIM16_CH1,
-
CM4_EVENTOUT
TIM1_CH3N, SAI1_PDM_DI2,
6
PB9
I/O FT_f
-
I2C1_SDA, SPI2_NSS, IR_OUT,
QUADSPI_BK1_IO0, SAI1_FS_A,
-
TIM17_CH1, CM4_EVENTOUT
7
NRST
I/O RST -
-
-
8
VDDA
S
-
-
-
-
TIM2_CH1, COMP1_OUT,
9
PA0
I/O FT_a - SAI1_EXTCLK, TIM2_ETR,
CM4_EVENTOUT
COMP1_INM, ADC1_IN5,
RTC_TAMP2/WKUP1
10
PA1
I/O FT_a
-
TIM2_CH2, I2C1_SMBA, SPI1_SCK,
CM4_EVENTOUT
COMP1_INP, ADC1_IN6
11
PA2
I/O FT_a
-
LSCO(3), TIM2_CH3, LPUART1_TX,
QUADSPI_BK1_NCS, COMP2_OUT,
CM4_EVENTOUT
COMP2_INM, ADC1_IN7,
WKUP4
TIM2_CH4, SAI1_PDM_CK1,
12
PA3
I/O FT_a - LPUART1_RX, QUADSPI_CLK,
COMP2_INP, ADC1_IN8
SAI1_MCLK_A, CM4_EVENTOUT
13
PA4
I/O FT_a
-
SPI1_NSS, SAI1_FS_B,
LPTIM2_OUT, CM4_EVENTOUT
COMP1_INM,
COMP2_INM, ADC1_IN9
14
PA5
I/O FT_a
TIM2_CH1, TIM2_ETR, SPI1_SCK,
- LPTIM2_ETR, SAI1_SD_B,
CM4_EVENTOUT
COMP1_INM,
COMP2_INM, ADC1_IN10
TIM1_BKIN, SPI1_MISO,
15
PA6
I/O FT_a - LPUART1_CTS, QUADSPI_BK1_IO3, ADC1_IN11
TIM16_CH1, CM4_EVENTOUT
TIM1_CH1N, I2C3_SCL, SPI1_MOSI,
16
PA7
I/O FT_fa - QUADSPI_BK1_IO2, COMP2_OUT, ADC1_IN12
TIM17_CH1, CM4_EVENTOUT
MCO, TIM1_CH1, SAI1_PDM_CK2,
17
PA8
I/O FT_a - USART1_CK, SAI1_SCK_A,
ADC1_IN15
LPTIM2_OUT, CM4_EVENTOUT
70/193
DS11929 Rev 10