Pin STM Connected to
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1 NRST
2 PA1 (Y1)
3 PA2 (Y1)
4 VSS digital ground
5 VCAP (C)
6 VDD power supply
7 AE3(VDDIO) AE3 (I/O power supply)
8 PF4 PF4
9 PB7(VDDA) PB7 (analog power supply)
10 PB6(VSSA) PB6 (analog ground)
11 PB5(AIN5) SDA (AIN5) Arduino A4(SDA
12 PB4 SCL (AIN4) Arduino A5(SCL)
13 PB3 AIN3 Arduino A3
14 PB2 AIN2 Arduino A2
15 PB1 AIN1 Arduino A1
16 PB0 AIN0 Arduino A0
17 PE5 PE5
18 PC1 L
19 PC2 L
20 PC3 L
21 PC4 L
22 PC5 Arduino 13(SCK)
23 PC6 Arduino 11(**MOSI)
24 PC7 Arduino 12(MISO)
25 PD0 7
26 PD1 SWIM
27 PD2 7
28 PD3 7
29 PD4 7
30 PD5 UART2_RX
31 PD6 UART2_TX
32 PD7 7
