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
F7 24 E6 32 50 19
VDD_1
PB12
S
VDD_1
PB12
SPI2_NSS/
I2C2_SMBAl/
USART3_CK(8)
TIM1_BKIN(8)
K8 25 H8 33 51
-
-
I/O FT
/
SPI2_SCK/
J8 26 G8 34 52
PB13
I/O FT
PB13
USART3_CTS(8)
TIM1_CH1N (8)
/
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
C9 30 C7 42 68 21
D10 31 C6 43 69 22
PA8
PA9
I/O FT
I/O FT
I/O FT
PA8
PA9
TIM1_CH1(8)/MCO
USART1_TX(8)
TIM1_CH2(8)
/
USART1_RX(8)
TIM1_CH3(8)
/
PA10
PA10
USART1_CTS/
CANRX(8)/ USBDM
TIM1_CH4(8)
C10 32 C8 44 70 23
B10 33 B8 45 71 24
PA11
PA12
I/O FT
I/O FT
PA11
PA12
USART1_RTS/
CANTX(8) //USBDP
TIM1_ETR(8)
28/92
Doc ID 13587 Rev 11