Datasheet

STM32F103x8, STM32F103xB Pin descriptions
23/84
K2 13 17 26 10 PA3 I/O PA3
USART2_RX
(6)
/
ADC12_IN3/
TIM2_CH4
(6)
E4 - 18 27 - V
SS_4
SV
SS_4
F4 - 19 28 - V
DD_4
SV
DD_4
G3 14 20 29 11 PA4 I/O PA4
SPI1_NSS
(6)
/
USART2_CK
(6)
/
ADC12_IN4
H3 15 21 30 12 PA5 I/O PA5
SPI1_SCK
(6)
/
ADC12_IN5
J3 16 22 31 13 PA6 I/O PA6
SPI1_MISO
(6)
/
ADC12_IN6/
TIM3_CH1
(6)
TIM1_BKIN
K3 17 23 32 14 PA7 I/O PA7
SPI1_MOSI
(6)
/
ADC12_IN7/
TIM3_CH2
(6)
TIM1_CH1N
G4 - 24 33 PC4 I/O PC4 ADC12_IN14
H4 - 25 34 PC5 I/O PC5 ADC12_IN15
J4 18 26 35 15 PB0 I/O PB0
ADC12_IN8/
TIM3_CH3
(6)
TIM1_CH2N
K4 19 27 36 16 PB1 I/O PB1
ADC12_IN9/
TIM3_CH4
(6)
TIM1_CH3N
G5 20 28 37 17 PB2 / BOOT1 I/O FT PB2/BOOT1
H5 - - 38 - PE7 I/O FT PE7 TIM1_ETR
J5 - - 39 - PE8 I/O FT PE8 TIM1_CH1N
K5 - - 40 - PE9 I/O FT PE9 TIM1_CH1
G6 - - 41 - PE10 I/O FT PE10 TIM1_CH2N
H6 - - 42 - PE11 I/O FT PE11 TIM1_CH2
J6 - - 43 - PE12 I/O FT PE12 TIM1_CH3N
K6 - - 44 - PE13 I/O FT PE13 TIM1_CH3
G7 - - 45 - PE14 I/O FT PE14 TIM1_CH4
H7 - - 46 - PE15 I/O FT PE15 TIM1_BKIN
J7 21 29 47 - PB10 I/O FT PB10
I2C2_SCL/
USART3_TX
(6)
TIM2_CH3
K7 22 30 48 - PB11 I/O FT PB11
I2C2_SDA/
USART3_RX
(6)
TIM2_CH4
E7 23 31 49 18 V
SS_1
SV
SS_1
Table 4. Medium-density STM32F103xx pin definitions (continued)
Pins
Pin name
Type
(1)
I / O Level
(2)
Main
function
(3)
(after reset)
Alternate functions
BGA100
LQFP48 LQFP64
LQFP100
VFQFPN36
Default Remap