Pinouts and pin description
STM32F103x8, STM32F103xB
Alternate functions(4)
Table 5.
Medium-density STM32F103xx pin definitions (continued)
Pins
Main
Pin name
function(3)
(after reset)
Default
Remap
USART2_TX(8)
ADC12_IN2/
TIM2_CH3(8)
/
J2 12 F3 16 25
9
PA2
PA3
I/O
I/O
PA2
PA3
USART2_RX(8)
ADC12_IN3/
TIM2_CH4(8)
/
K2 13 G3 17 26 10
E4
F4
-
-
C2 18 27
D2 19 28
-
-
VSS_4
VDD_4
S
S
VSS_4
VDD_4
SPI1_NSS(8)
/
G3 14 H3 20 29 11
H3 15 F4 21 30 12
J3 16 G4 22 31 13
PA4
PA5
PA6
I/O
I/O
I/O
PA4
PA5
PA6
USART2_CK(8)
ADC12_IN4
/
SPI1_SCK(8)
ADC12_IN5
/
SPI1_MISO(8)
ADC12_IN6/
TIM3_CH1(8)
/
/
TIM1_BKIN
TIM1_CH1N
SPI1_MOSI(8)
ADC12_IN7/
TIM3_CH2(8)
K3 17 H4 23 32 14
PA7
I/O
PA7
G4
H4
-
-
H5 24 33
H6 25 34
PC4
PC5
I/O
I/O
PC4
PC5
ADC12_IN14
ADC12_IN15
ADC12_IN8/
TIM3_CH3(8)
J4 18 F5 26 35 15
PB0
PB1
I/O
I/O
PB0
PB1
TIM1_CH2N
TIM1_CH3N
ADC12_IN9/
TIM3_CH4(8)
K4 19 G5 27 36 16
G5 20 G6 28 37 17
PB2
PE7
I/O FT PB2/BOOT1
H5
J5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
38
39
40
41
42
43
44
45
-
-
-
-
-
-
-
-
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
PE7
PE8
TIM1_ETR
TIM1_CH1N
TIM1_CH1
TIM1_CH2N
TIM1_CH2
TIM1_CH3N
TIM1_CH3
TIM1_CH4
PE8
K5
G6
H6
J6
PE9
PE9
PE10
PE11
PE12
PE13
PE14
PE10
PE11
PE12
PE13
PE14
K6
G7
28/96
Doc ID 13587 Rev 12
STMICROELECTRONICS [ ST ]
