STM32L15XRC datasheet(38/136 Pages) STMICROELECTRONICS

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Pin descriptions

STM32L151xC STM32L152xC

38/136

DocID022799 Rev 12

Table 8. Legend/abbreviations used in the pinout table

Name

Abbreviation

Definition

Pin name

Unless otherwise specified in brackets below the pin name, the pin function

during and after reset is the same as the actual pin name

Pin type

Supply pin

Input only pin

I/O

Input / output pin

I/O structure

5 V tolerant I/O

Standard 3.3 V I/O

Dedicated BOOT0 pin

RST

Bidirectional reset pin with embedded weak pull-up resistor

Notes

Unless otherwise specified by a note, all I/Os are set as floating inputs during

and after reset

functions

Alternate

functions

Functions selected through GPIOx_AFR registers

Additional

functions

Functions directly selected/enabled through peripheral registers

Table 9. STM32L151xC and STM32L152xC pin definitions

Pins

Pin name

Main

function(2)

(after

reset)

Pin functions

Alternate functions

Additional functions

PE2

I/O

PE2

TIM3_ETR/LCD_SEG38

/TRACECLK

PE3

I/O

PE3

TIM3_CH1/LCD_SEG39

/TRACED0

PE4

I/O

PE4

TIM3_CH2/TRACED1

PE5

I/O

PE5

TIM9_CH1/TRACED2

PE6-

WKUP3

I/O

PE6

TIM9_CH2/ TRACED3

WKUP3/

RTC_TAMP3

VLCD(3)

S-

VLCD

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