Datasheet

Pin descriptions STM32F103x8, STM32F103xB
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Table 4. Medium-density STM32F103xx pin definitions
Pins
Pin name
Type
(1)
I / O Level
(2)
Main
function
(3)
(after reset)
Alternate functions
BGA100
LQFP48 LQFP64
LQFP100
VFQFPN36
Default Remap
A3 - - 1 - PE2 I/O FT PE2 TRACECK
B3 - - 2 - PE3 I/O FT PE3 TRACED0
C3 - - 3 - PE4 I/O FT PE4 TRACED1
D3 - - 4 - PE5 I/O FT PE5 TRACED2
E3 - - 5 - PE6 I/O FT PE6 TRACED3
B2116- V
BAT
SV
BAT
A2227-
PC13-TAMPER-
RTC
(4)
I/O PC13
(5)
TAMPER-RTC
A1 3 3 8 - PC14-OSC32_IN
(4)
I/O PC14
(5)
OSC32_IN
B1449-
PC15-
OSC32_OUT
(4)
I/O PC15
(5)
OSC32_OUT
C2 - - 10 - V
SS_5
SV
SS_5
D2 - - 11 - V
DD_5
SV
DD_5
C1 5 5 12 2 OSC_IN I OSC_IN
D1 6 6 13 3 OSC_OUT O OSC_OUT
E1 7 7 14 4 NRST I/O NRST
F1 - 8 15 - PC0 I/O PC0 ADC12_IN10
F2 - 9 16 - PC1 I/O PC1 ADC12_IN11
E2 - 10 17 - PC2 I/O PC2 ADC12_IN12
F3 - 11 18 - PC3 I/O PC3 ADC12_IN13
G1 8 12 19 5 V
SSA
SV
SSA
H1 - - 20 - V
REF-
SV
REF-
J1 - - 21 - V
REF+
SV
REF+
K1 9 13 22 6 V
DDA
SV
DDA
G2 10 14 23 7 PA0-WKUP I/O PA0
WKUP/USART2_
CTS
(6)
/
ADC12_IN0/
TIM2_CH1_ETR
(6)
H2 11 15 24 8 PA1 I/O PA1
USART2_RTS
(6)
/
ADC12_IN1/
TIM2_CH2
(6)
J2 12 16 25 9 PA2 I/O PA2
USART2_TX
(6)
/
ADC12_IN2/
TIM2_CH3
(6)