Datasheet
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
S Supply pin
I Input only pin
I/O Input/ output pin
I/O structure
FT 5 V tolerant I/O
B 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)
Pin type
I/O structure
Notes
Alternate functions
Additional
functions
UQFN48
WLCSP49
LQFP64
LQFP100
UFBGA100
- - - 1 B2 PE2 I/O FT -
SPI4_SCK, TRACECLK,
EVENTOUT
-
- - - 2 A1 PE3 I/O FT - TRACED0, EVENTOUT -
- - - 3 B1 PE4 I/O FT -
SPI4_NSS, TRACED1,
EVENTOUT
-
- - - 4 C2 PE5 I/O FT -
SPI4_MISO, TIM9_CH1,
TRACED2, EVENTOUT
-
- - - 5 D2 PE6 I/O FT -
SPI4_MOSI, TIM9_CH2,
TRACED3, EVENTOUT
-
- - - - D3 VSS S - - - -
----C4 VDD S- - - -
1 B7 1 6 E2 VBAT S - - - -
2 D5 2 7 C1 PC13 I/O FT
(2)
(3)
EVENTOUT,
RTC_TAMP1,
RTC_OUT, RTC_TS
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