Pinouts and pin description
Table 5.
STM32F103x8, STM32F103xB
Medium-density STM32F103xx pin definitions (continued)
Pins
LQFP48/UFQFPN48
I / O Level
(2)
Alternate functions
(4)
VFQFPN36
LFBGA100
TFBGA64
UFBG100
LQFP100
LQFP64
Pin name
Main
function
(3)
(after reset)
Type
(1)
Default
Remap
H7 M12
J7 L10
K7 L11
E7 F12
-
21
22
23
-
G7
H7
D6
E6
-
29
30
31
32
46
47
48
49
50
-
-
-
18
19
PE15
PB10
PB11
V
SS_1
V
DD_1
I/O FT
I/O FT
I/O FT
S
S
PE15
PB10
PB11
V
SS_1
V
DD_1
SPI2_NSS/
I2C2_SMBAl/
USART3_CK
(9)
/
TIM1_BKIN
(9)
SPI2_SCK/
USART3_CTS
(9)
/
TIM1_CH1N
(9)
SPI2_MISO/
USART3_RTS
(9)
TIM1_CH2N
(9)
SPI2_MOSI/
TIM1_CH3N
(9)
I2C2_SCL/
USART3_TX
(9)
I2C2_SDA/
USART3_RX
(9)
TIM1_BKIN
TIM2_CH3
TIM2_CH4
F7 G12 24
K8 L12
25
H8
33
51
-
PB12
I/O FT
PB12
J8 K12 26
G8
34
52
-
PB13
I/O FT
PB13
H8 K11 27
F8
35
53
-
PB14
I/O FT
PB14
G8 K10 28
K9
J9
K9
K8
-
-
-
-
-
-
-
-
-
F7
-
-
-
-
-
-
-
-
F6
E7
E8
36
-
-
-
-
-
-
-
-
37
38
39
40
54
55
56
57
58
59
60
61
62
63
64
65
66
-
-
-
-
-
-
-
-
-
-
-
-
-
PB15
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PC6
PC7
PC8
PC9
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
PB15
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PC6
PC7
PC8
PC9
USART3_TX
USART3_RX
USART3_CK
USART3_CTS
TIM4_CH1 /
USART3_RTS
TIM4_CH2
TIM4_CH3
TIM4_CH4
TIM3_CH1
TIM3_CH2
TIM3_CH3
TIM3_CH4
H9 J12
G9 J11
K10 J10
J10 H12
H10 H11
G10 H10
F10 E12
E10 E11
F9 E10
E9 D12
-
D8
30/105
Doc ID 13587 Rev 15
STMICROELECTRONICS [ STMICROELECTRONICS ]
