Datasheet
Pinout and pin descriptions STM32F303x6/x8
34/121 DocID025083 Rev 7
Table 13. 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
FTf 5 V tolerant I/O, FM+ capable
TTa 3.3 V tolerant I/O directly connected to ADC
TT 3.3 V tolerant I/O
TC Standard 3.3 V I/O
B Dedicated BOOT0 pin
RST Bi-directional reset pin with embedded weak pull-up resistor
POR
External power-on reset pin with embedded weak pull-up resistor,
powered from V
DDA
.
Notes
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
Table 14. STM32F303x6/8 pin definitions
Pin Number
Pin name
(function after
reset)
Pin type
I/O structure
Pin functions
LQFP32
LQFP48
LQFP64
WLCSP49
Alternate
functions
Additional functions
- 1 1 - VBAT S - Backup power supply
-22- PC13
(1)
I/O TC TIM1_CH1N
RTC_TAMP1/RTC_TS/
RTC_OUT/WKUP2
- 3 3 - PC14 / OSC32_IN
(1)
I/O TC - OSC32_IN
- 4 4 - PC15 / OSC32_OUT
(1)
I/O TC - OSC32_OUT
2 5 5 C7 PF0 / OSC_IN I/O FT TIM1_CH3N OSC_IN
3 6 6 C6 PF1 / OSC_OUT I/O FT - OSC_OUT
4 7 7 D7 NRST I/O RST
Device reset input / internal reset output
(active low)
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