
STM32F031x4 STM32F031x6
Pinouts and pin description
Pin number
Table 11. Pin definitions (continued)
Pin functions
Pin name
(function upon
reset)
Notes
Alternate functions
Additional
functions
6
3
3
3 B5 3
PF1-OSC_OUT
(PF1)
I/O
FT
-
7 4 4 4 C5 4
NRST
I/O RST -
8
16
(3)
0(3)
16
(3)
E1
(3)
15
(3)
VSSA
S
-
9 5 5 5 D5 5
VDDA
S
-
10 6 6 6 B4 6
PA0
I/O TTa -
11 7 7 7 C4 7
12 8 8 8 D4 8
13 9 9 9 E5 9
PA1
I/O TTa -
PA2
I/O TTa -
PA3
I/O TTa -
14 10 10 10 B3 10
PA4
I/O TTa -
15 11 11 11 C3 11
PA5
I/O TTa -
16 12 12 12 D3 12
PA6
I/O TTa -
-
OSC_OUT
Device reset input / internal reset output
(active low)
Analog ground
Analog power supply
TIM2_CH1_ETR,
USART1_CTS
ADC_IN0,
RTC_TAMP2,
WKUP1
TIM2_CH2,
EVENTOUT,
USART1_RTS
ADC_IN1
TIM2_CH3,
USART1_TX
ADC_IN2
TIM2_CH4,
USART1_RX
ADC_IN3
SPI1_NSS,
I2S1_WS,
TIM14_CH1,
USART1_CK
ADC_IN4
SPI1_SCK,
I2S1_CK,
TIM2_CH1_ETR
ADC_IN5
SPI1_MISO,
I2S1_MCK,
TIM3_CH1,
TIM1_BKIN,
TIM16_CH1,
EVENTOUT
ADC_IN6
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