STM32L431XX Datasheet, PDF (62/200 Pages) STMicroelectronics – RTC with HW calendar, alarms and calibration

Pinouts and pin description
STM32L431xx
Table 14. STM32L431xx pin definitions (continued)
Pin Number
Pin name
(function
after
reset)
Pin functions
Alternate functions
Additional
functions
- - - - - - - 88
26 39 39 A3 A5 55 A5 89
27 40 40 A4 B4 56 A4 90
28 41 41 B4 C4 57 C4 91
29 42 42 C4 B5 58 D3 92
30 43 43 D4 A6 59 C3 93
31 44 44 A5 C5 60 B4 94
- 45 45 B5 C6 61 B3 95
- 46 46 C5 B6 62 A3 96
A5 PD7 I/O
PB3
A8
(JTDO-
TRACE
I/O
SWO)
A7
PB4
(NJTRST)
I/O
C5 PB5 I/O
B5 PB6 I/O
B4 PB7 I/O
A4
PH3/
BOOT0
I/O
A3 PB8 I/O
B3 PB9 I/O
USART2_CK,
FT - QUADSPI_BK2_IO3,
-
EVENTOUT
FT_a ⁽³⁾
JTDO-TRACESWO,
TIM2_CH2, SPI1_SCK,
SPI3_SCK,
USART1_RTS_DE,
SAI1_SCK_B,
EVENTOUT
COMP2_INM
NJTRST, I2C3_SDA,
SPI1_MISO, SPI3_MISO,
FT_fa ⁽³⁾
USART1_CTS,
TSC_G2_IO1,
SAI1_MCLK_B,
EVENTOUT
COMP2_INP
LPTIM1_IN1,
I2C1_SMBA,
SPI1_MOSI, SPI3_MOSI,
USART1_CK,
FT -
TSC_G2_IO2,
-
COMP2_OUT,
SAI1_SD_B,
TIM16_BKIN,
EVENTOUT
LPTIM1_ETR, I2C1_SCL,
USART1_TX,
FT_fa -
TSC_G2_IO3,
SAI1_FS_B,
COMP2_INP
TIM16_CH1N,
EVENTOUT
LPTIM1_IN2, I2C1_SDA,
FT_fa -
USART1_RX,
TSC_G2_IO4,
COMP2_INM,
PVD_IN
EVENTOUT
FT -
EVENTOUT
BOOT0
I2C1_SCL, CAN1_RX,
FT_f -
SDMMC1_D4,
SAI1_MCLK_A,
-
TIM16_CH1, EVENTOUT
IR_OUT, I2C1_SDA,
FT_f -
SPI2_NSS, CAN1_TX,
SDMMC1_D5,
-
SAI1_FS_A, EVENTOUT
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