Pinouts and pin description
STM32F031x4 STM32F031x6
30/113
DocID025743 Rev 3
32
21
21
-
-
-
PA11
I/O
FT
-
USART1_CTS,
TIM1_CH4,
EVENTOUT
-
33
22
22
-
-
-
PA12
I/O
FT
-
USART1_RTS,
TIM1_ETR,
EVENTOUT
-
34
23
23
21
A1
19
PA13
(SWDIO)
I/O
FT
(4)
IR_OUT,
SWDIO
-
35
-
-
-
-
-
PF6
I/O
FTf
-
I2C1_SCL
-
36
-
-
-
-
-
PF7
I/O
FTf
-
I2C1_SDA
-
37
24
24
22
A2
20
PA14
(SWCLK)
I/O
FT
(4)
USART1_TX,
SWCLK
-
38
25
25
23
-
-
PA15
I/O
FT
-
SPI1_NSS,
I2S1_WS,
TIM2_CH_ETR,
EVENTOUT,
USART1_RX
-
39
26
26
24
-
-
PB3
I/O
FT
-
SPI1_SCK,
I2S1_CK,
TIM2_CH2,
EVENTOUT
-
40
27
27
25
-
-
PB4
I/O
FT
-
SPI1_MISO,
I2S1_MCK,
TIM3_CH1,
EVENTOUT
-
41
28
28
26
C2
-
PB5
I/O
FT
-
SPI1_MOSI,
I2S1_SD,
I2C1_SMBA,
TIM16_BKIN,
TIM3_CH2
-
42
29
29
27
B2
-
PB6
I/O
FTf
-
I2C1_SCL,
USART1_TX,
TIM16_CH1N
-
43
30
30
28
A3
-
PB7
I/O
FTf
-
I2C1_SDA,
USART1_RX,
TIM17_CH1N
-
Table 11. Pin definitions (continued)
Pin number
Pin name
(function after
reset)
Pin type
I/O
structure
Notes
Pin functions
LQ
FP4
8
LQ
FP3
2
UFQFPN3
2
UFQFPN2
8
WLCSP25
TSSOP20
Alternate functions
Additional
functions
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021-31660491
微可Vicor——值得信赖的元器件供应商
http://www.vicor.top/
021-31660491