STM32F401CD datasheet(38/135 Pages) STMICROELECTRONICS

38 / 135 page

Pinouts and pin description

STM32F401xD STM32F401xE

38/135

DocID025644 Rev 3

Table 7. 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

Dedicated BOOT0 pin

NRST

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

Alternate

functions

Functions selected through GPIOx_AFR registers

Additional

functions

Functions directly selected/enabled through peripheral registers

Table 8. STM32F401xD/xE pin definitions

Pin Number

Pin name

(function

after reset)(1)

Alternate functions

Additional

functions

PE2

I/O FT

SPI4_SCK, TRACECLK,

EVENTOUT

PE3

I/O FT

TRACED0, EVENTOUT

PE4

I/O FT

SPI4_NSS, TRACED1,

EVENTOUT

PE5

I/O FT

SPI4_MISO, TIM9_CH1,

TRACED2, EVENTOUT

PE6

I/O FT

SPI4_MOSI, TIM9_CH2,

TRACED3, EVENTOUT

VSS

VDD

VBAT

PC13

I/O FT (2) (3) EVENTOUT,

RTC_TAMP1,

RTC_OUT, RTC_TS

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