Datasheet

DocID028798 Rev 3 51/155
STM32L432KB STM32L432KC Pinouts and pin description
61
Table 14. STM32L432xx pin definitions
Pin
Number
Pin name
(function after
reset)
Pin type I/O structure Notes
Pin functions
UFQFPN32
Alternate functions Additional functions
2
PC14-
OSC32_I
N (PC14)
I/O FT
(1)
(2)
EVENTOUT OSC32_IN
3
PC15-
OSC32_
OUT
(PC15)
I/O FT
(1)
(2)
EVENTOUT OSC32_OUT
4 NRST I/O RST - - -
5
VDDA/VR
EF+
S-- - -
6
PA0/
CK_IN
I/O FT_a -
TIM2_CH1, USART2_CTS,
COMP1_OUT, SAI1_EXTCLK,
TIM2_ETR, EVENTOUT
OPAMP1_VINP,
COMP1_INM, ADC1_IN5,
RTC_TAMP2, WKUP1,
CK_IN
7 PA1 I/O FT_a -
TIM2_CH2, I2C1_SMBA,
SPI1_SCK,
USART2_RTS_DE,
TIM15_CH1N, EVENTOUT
OPAMP1_VINM,
COMP1_INP, ADC1_IN6
8 PA2 I/O FT_a -
TIM2_CH3, USART2_TX,
LPUART1_TX,
QUADSPI_BK1_NCS,
COMP2_OUT, TIM15_CH1,
EVENTOUT
COMP2_INM, ADC1_IN7,
WKUP4, LSCO
9 PA3 I/O TT_a -
TIM2_CH4, USART2_RX,
LPUART1_RX,
QUADSPI_CLK,
SAI1_MCLK_A, TIM15_CH2,
EVENTOUT
OPAMP1_VOUT,
COMP2_INP, ADC1_IN8
10 PA4 I/O TT_a -
SPI1_NSS, SPI3_NSS,
USART2_CK, SAI1_FS_B,
LPTIM2_OUT, EVENTOUT
COMP1_INM,
COMP2_INM, ADC1_IN9,
DAC1_OUT1
11 PA5 I/O TT_a -
TIM2_CH1, TIM2_ETR,
SPI1_SCK, LPTIM2_ETR,
EVENTOUT
COMP1_INM,
COMP2_INM, ADC1_IN10,
DAC1_OUT2
12 PA6 I/O FT_a -
TIM1_BKIN, SPI1_MISO,
COMP1_OUT, USART3_CTS,
LPUART1_CTS,
QUADSPI_BK1_IO3,
TIM1_BKIN_COMP2,
TIM16_CH1, EVENTOUT
ADC1_IN11
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