STM32F103x8, STM32F103xB
Pinouts and pin description
Alternate functions(4)
Table 5.
Medium-density STM32F103xx pin definitions (continued)
Pins
Main
Pin name
function(3)
(after reset)
Default
Remap
H7
-
-
-
46
-
-
PE15
PB10
I/O FT
I/O FT
PE15
PB10
TIM1_BKIN
TIM2_CH3
I2C2_SCL/
J7 21 G7 29 47
K7 22 H7 30 48
USART3_TX(8)
I2C2_SDA/
-
PB11
I/O FT
PB11
TIM2_CH4
USART3_RX(8)
E7 23 D6 31 49 18
F7 24 E6 32 50 19
VSS_1
VDD_1
S
S
VSS_1
VDD_1
SPI2_NSS/
I2C2_SMBAl/
K8 25 H8 33 51
-
-
PB12
PB13
I/O FT
I/O FT
PB12
PB13
USART3_CK(8)
TIM1_BKIN(8)
/
SPI2_SCK/
USART3_CTS(8)
TIM1_CH1N (8)
J8 26 G8 34 52
/
SPI2_MISO/
H8 27 F8 35 53
G8 28 F7 36 54
-
-
PB14
PB15
I/O FT
I/O FT
PB14
PB15
USART3_RTS(8)
TIM1_CH2N (8)
SPI2_MOSI/
TIM1_CH3N(8)
K9
J9
-
-
-
-
-
-
-
-
-
-
-
-
55
56
57
58
-
-
-
-
PD8
PD9
I/O FT
I/O FT
I/O FT
I/O FT
PD8
PD9
USART3_TX
USART3_RX
USART3_CK
USART3_CTS
H9
G9
PD10
PD11
PD10
PD11
TIM4_CH1 /
USART3_RTS
K10
-
-
-
59
-
PD12
I/O FT
PD12
J10
H10
G10
F10
E10
F9
-
-
-
-
-
-
-
-
-
-
60
61
62
-
-
-
-
-
-
-
PD13
PD14
PD15
PC6
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
PD13
PD14
PD15
PC6
TIM4_CH2
TIM4_CH3
TIM4_CH4
TIM3_CH1
TIM3_CH2
TIM3_CH3
TIM3_CH4
F6 37 63
E7 38 64
E8 39 65
D8 40 66
PC7
PC7
PC8
PC8
E9
-
PC9
PC9
USART1_CK/
D9 29 D7 41 67 20
PA8
I/O FT
PA8
TIM1_CH1(8)/MCO
Doc ID 13587 Rev 12
29/96
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