Pin descriptions
STM32F103xC, STM32F103xD, STM32F103xE
Table 4.
Pin definitions
Pins
Alternate functions
Main
Pin name
function(3)
Default
Remap
(after reset)
FT
FT
FT
FT
FT
A3 A3
A2 B3
B2 C3
B3 D3
B4 E3
C2 B2
-
-
1
2
3
4
5
6
1
2
3
4
5
6
PE2
PE3
PE4
PE5
PE6
VBAT
I/O
I/O
I/O
I/O
I/O
S
PE2
PE3
PE4
PE5
PE6
VBAT
TRACECK/ FSMC_A23
TRACED0/FSMC_A19
TRACED1/FSMC_A20
TRACED2/FSMC_A21
TRACED3/FSMC_A22
-
-
-
1
PC13-TAMPER-
RTC(4)
A1 A2
B1 A1
C1 B1
2
3
4
7
8
9
7
8
9
I/O
PC13(5)
PC14(5)
PC15(5)
TAMPER-RTC
OSC32_IN
PC14-OSC32_IN(4) I/O
PC15-
I/O
OSC32_OUT
OSC32_OUT(4)
C3
C4
D4
E2
E3
E4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
10
11
12
13
14
15
PF0
PF1
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
S
PF0
PF1
FSMC_A0
FSMC_A1
FSMC_A2
FSMC_A3
FSMC_A4
FSMC_A5
PF2
PF2
PF3
PF3
PF4
PF4
PF5
PF5
D2 C2
D3 D2
10 16
11 17
VSS_5
VDD_5
VSS_5
VDD_5
S
ADC3_IN4/
FSMC_NIORD
F3
F2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
18
19
20
21
22
PF6
PF7
PF8
PF9
PF10
I/O
I/O
I/O
I/O
I/O
PF6
PF7
PF8
PF9
PF10
ADC3_IN5/
FSMC_NREG
ADC3_IN6/
FSMC_NIOWR
G3
G2
G1
ADC3_IN7/
FSMC_CD
ADC3_IN8/
FSMC_INTR
D1 C1
E1 D1
F1 E1
H1 F1
H2 F2
5
6
7
8
9
12 23
13 24
14 25
15 26
16 27
OSC_IN
OSC_OUT
NRST
PC0
I
OSC_IN
OSC_OUT
NRST
PC0
O
I/O
I/O
I/O
I/O
ADC123_IN10
ADC123_IN11
ADC123_IN12
PC1
PC1
H3 E2 10 17 28
PC2
PC2
26/118
STMICROELECTRONICS [ ST ]
