Datasheet
Pinouts and pin description STM32L431xx
54/200 DocID028800 Rev 1
Table 14. STM32L431xx pin definitions
Pin Number
Pin name
(function
after
reset)
Pin type
I/O structure
Notes
Pin functions
UFQFPN32
LQFP48
UFQFPN48
WLCSP49
WLCSP64
LQFP64
UFBGA64
LQFP100
UFBGA100
Alternate functions
Additional
functions
--- - - - - 1 B2 PE2 I/O FT -
TRACECK,
TSC_G7_IO1,
SAI1_MCLK_A,
EVENTOUT
-
--- - - - - 2 A1 PE3 I/O FT -
TRACED0,
TSC_G7_IO2,
SAI1_SD_B, EVENTOUT
-
--- - - - - 3 B1 PE4 I/O FT -
TRACED1,
TSC_G7_IO3,
SAI1_FS_A, EVENTOUT
-
--- - - - - 4C2 PE5 I/O FT -
TRACED2,
TSC_G7_IO4,
SAI1_SCK_A,
EVENTOUT
-
--- - - - - 5D2 PE6 I/O FT -
TRACED3, SAI1_SD_A,
EVENTOUT
RTC_TAMP3,
WKUP3
- 1 1 B6 B7 1 B2 6 E2 VBAT S - - - -
- 2 2B7B82A2 7 C1 PC13 I/O FT
(1)
(2)
EVENTOUT
RTC_TAMP1,
RTC_TS,
RTC_OUT,
WKUP2
2 3 3 C7 C8 3 A1 8 D1
PC14-
OSC32_I
N (PC14)
I/O FT
(1)
(2)
EVENTOUT OSC32_IN
3 4 4 C6 C7 4 B1 9 E1
PC15-
OSC32_
OUT
(PC15)
I/O FT
(1)
(2)
EVENTOUT OSC32_OUT
--- - - - -10F2 VSS S - - - -
--- - - - -11G2 VDD S - - - -
- 5 5D7D85C112 F1
PH0-
OSC_
IN (PH0)
I/O FT - EVENTOUT OSC_IN
- 6 6D6D76D113 G1
PH1-
OSC_
OUT
(PH1)
I/O FT - EVENTOUT OSC_OUT
4 7 7 D5 D6 7 E1 14 H2 NRST I/O RST - - -
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