STM32L452XX Datasheet, PDF (60/210 Pages) STMicroelectronics – Ultra-low-power with FlexPowerControl

Pinouts and pin description
STM32L452xx
Name
Pin name
Pin type
I/O structure
Notes
Table 14. Legend/abbreviations used in the pinout table
Abbreviation
Definition
Unless otherwise specified in brackets below the pin name, the pin function during and after
reset is the same as the actual pin name
S
Supply pin
I
Input only pin
I/O
Input / output pin
FT
5 V tolerant I/O
TT
3.6 V tolerant I/O
RST
Bidirectional reset pin with embedded weak pull-up resistor
_f ⁽¹⁾
_u ⁽²⁾
_a ⁽³⁾
Option for TT or FT I/Os
I/O, Fm+ capable
I/O, with USB function supplied by V_DDUSB
I/O, with Analog switch function supplied by V_DDA
Unless otherwise specified by a note, all I/Os are set as analog inputs during and after reset.
Pin
Alternate
functions
Functions selected through GPIOx_AFR registers
functions
Additional
functions
Functions directly selected/enabled through peripheral registers
1. The related I/O structures in Table 15 are: FT_f, FT_fa.
2. The related I/O structures in Table 15 are: FT_u, FT_fu.
3. The related I/O structures in Table 15 are: FT_a, FT_fa, TT_a.
Pin Number
Table 15. STM32L452xx pin definitions
Pin functions
Pin name
(function
after
reset)
Alternate functions Additional functions
TRACECK, TIM3_ETR,
- - - - - 1 B2 PE2 I/O FT -
TSC_G7_IO1,
SAI1_MCLK_A,
-
EVENTOUT
TRACED0, TIM3_CH1,
- - - - - 2 A1 PE3 I/O FT -
TSC_G7_IO2,
-
SAI1_SD_B, EVENTOUT
TRACED1, TIM3_CH2,
- - - - - 3 B1 PE4 I/O FT -
DFSDM1_DATIN3,
TSC_G7_IO3,
-
SAI1_FS_A, EVENTOUT
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