Pinouts and pin description
STM32F301x6 STM32F301x8
Table 12. 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
S
Pin type
I
I/O
Supply pin
Input only pin
Input / output pin
FT
5 V tolerant I/O
FTf
5 V tolerant I/O, I2C FM+ option
TTa
TT
I/O structure
TC
3.3 V tolerant I/O
3.3 V tolerant I/O
Standard 3.3V I/O
B
Dedicated BOOT0 pin
Notes
RST
Bi-directional reset pin with embedded weak pull-up resistor
Unless otherwise specified by a note, all I/Os are set as floating inputs during and after
reset
Pin
functions
Alternate
functions
Functions selected through GPIOx_AFR registers
Additional
functions
Functions directly selected/enabled through peripheral registers
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