STM32F103x8, STM32F103xB
Pinouts and pin description
Alternate functions(4)
Table 5.
Medium-density STM32F103xx pin definitions
Pins
Main
Pin name
function(3)
(after reset)
Default
Remap
A3
B3
C3
D3
E3
B2
-
-
-
-
1
2
3
4
5
6
-
-
-
-
-
-
PE2
PE3
PE4
PE5
PE6
VBAT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
S
PE2
PE3
PE4
PE5
PE6
VBAT
TRACECK
TRACED0
TRACED1
TRACED2
TRACED3
-
-
-
-
-
-
1
B2
1
PC13-TAMPER-
RTC(5)
A2
A1
B1
2
3
4
A2
A1
B1
2
3
4
7
8
9
-
-
-
I/O
PC13(6)
PC14(6)
PC15(6)
TAMPER-RTC
OSC32_IN
PC14-OSC32_IN(5) I/O
PC15-
I/O
OSC32_OUT
OSC32_OUT(5)
C2
D2
C1
D1
E1
F1
F2
E2
F3
G1
H1
J1
-
-
-
-
10
11
12
13
14
15
16
-
-
VSS_5
VDD_5
OSC_IN
OSC_OUT
NRST
PC0
S
S
VSS_5
VDD_5
OSC_IN
OSC_OUT
NRST
PC0
-
-
5
6
7
-
C1
D1
E1
E3
E2
5
6
7
8
9
2
3
4
-
I
O
I/O
I/O
I/O
I/O
I/O
S
ADC12_IN10
ADC12_IN11
ADC12_IN12
ADC12_IN13
-
-
PC1
PC1
-
F2 10 17
-
PC2
PC2
(7)
-
-
11 18
-
PC3
PC3
8
-
F1 12 19
5
-
VSSA
VSSA
-
-
-
20
21
VREF-
VREF+
VDDA
S
VREF-
VREF+
VDDA
-
G1(7)
-
S
K1
9
H1 13 22
6
S
WKUP/
USART2_CTS(8)
ADC12_IN0/
/
G2 10 G2 14 23
H2 11 H2 15 24
7
8
PA0-WKUP
PA1
I/O
I/O
PA0
PA1
TIM2_CH1_ETR(8)
USART2_RTS(8)
ADC12_IN1/
/
TIM2_CH2(8)
Doc ID 13587 Rev 12
27/96