STM32F103x4, STM32F103x6
Pinouts and pin description
Alternate functions(4)
Table 5.
Pins
Low-density STM32F103xx pin definitions
Main
Pin name
function(3)
(after reset)
Default
Remap
1
2
3
4
1
2
3
4
B2
A2
A1
B1
-
-
-
-
VBAT
S
VBAT
PC13-TAMPER-
RTC(5)
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)
5
6
7
-
5
6
7
8
9
C1
D1
E1
E3
E2
2
3
4
-
OSC_IN
OSC_OUT
NRST
PC0
I
OSC_IN
OSC_OUT
NRST
PC0
O
I/O
I/O
I/O
I/O
I/O
S
ADC12_IN10
ADC12_IN11
ADC12_IN12
ADC12_IN13
-
-
PC1
PC1
-
10 F2
-
PC2
PC2
-
11
-
-
-
PC3
PC3
(7)
-
G1
-
VREF+
VREF+
VSSA
8
9
12 F1
13 H1
5
6
VSSA
VDDA
S
S
VDDA
WKUP/USART2_CTS/
ADC12_IN0/
10
14 G2
7
PA0-WKUP
I/O
PA0
TIM2_CH1_ETR(8)
USART2_RTS/
11
12
13
15 H2
16 F3
8
9
PA1
PA2
PA3
I/O
I/O
I/O
PA1
PA2
PA3
ADC12_IN1/ TIM2_CH2(8)
USART2_TX/
ADC12_IN2/ TIM2_CH3(8)
USART2_RX/
17 G3 10
ADC12_IN3/TIM2_CH4(8)
-
-
18 C2
19 D2
-
-
VSS_4
VDD_4
S
S
VSS_4
VDD_4
SPI1_NSS(8)
USART2_CK/ADC12_IN4
/
14
15
16
20 H3 11
21 F4 12
22 G4 13
PA4
PA5
PA6
I/O
I/O
I/O
PA4
PA5
PA6
SPI1_SCK(8)/ ADC12_IN5
SPI1_MISO(8)
ADC12_IN6/TIM3_CH1(8)
/
TIM1_BKIN
TIM1_CH1N
SPI1_MOSI(8)
/
17
-
23 H4 14
24 H5
PA7
PC4
I/O
I/O
PA7
ADC12_IN7/TIM3_CH2(8)
PC4
ADC12_IN14
Doc ID 15060 Rev 5
25/87
STMICROELECTRONICS [ ST ]
