| 
| Desc | Name | No | No | Name | Desc |  
| Battery Supply[1] | VB | 1 | 2 | GND | Ground |  
| Boot0 | BO0 | 3 | 4 | NRST | Reset |  
| ADC IN10 | PC0 | 5 | 6 | PC1 |  |  
|  | PC2 | 7 | 8 | PC3 |  |  
|  | PA0 | 9 | 10 | PA1 |  |  
| USART2_TX | PA2 | 11 | 12 | PA3 | USART2_RX |  
|  | PA4 | 13 | 14 | PA5 |  |  
|  | PA6 | 15 | 16 | PA7 |  |  
|  | PC4 | 17 | 18 | PC5 |  |  
|  | PB0 | 19 | 20 | PB1 |  |  
|  | PB2 | 21 | 22 | U0 |  |  
|  | PB10 | 23 | 24 | PB11 |  |  
|  | PB12 | 25 | 26 | PB13 |  |  
|  | PB14 | 27 | 28 | PB15 |  |  
|  | PC6 | 29 | 30 | PC7 |  |  
|  | PC8 | 31 | 32 | PC9 |  |  
|  | U1 | 33 | 34 | U2 |  |  
|  | U3 | 35 | 36 | U4 |  |  
| Regulated 3.3V | 3.3V | 37 | 38 | GND | Ground |  
|  | 5V | 39 | 40 | GND | Ground |  | 
| Desc | Name | No | No | Name | Desc |  
| Ground | GND | 80 | 79 | VA | Analogue Supply[2] |  
|  | U6 | 78 | 77 | U5 |  |  
|  | PC15 | 76 | 75 | U7 |  |  
|  | PC13 | 74 | 73 | PC14 |  |  
|  | U10 | 72 | 71 | U9 |  |  
|  | PB9 | 70 | 69 | PB8 |  |  
| USART1_RX_Alt | PB7 | 68 | 67 | PB6 | USART1_TX_Alt |  
|  | PB5 | 66 | 65 | PB4 |  |  
|  | PB3 | 64 | 63 | PD2 |  |  
|  | U8 | 62 | 61 | PC12 |  |  
|  | PC11 | 60 | 59 | PC10 |  |  
|  | U12 | 58 | 57 | U11 |  |  
|  | PA15 | 56 | 55 | PA14 | SWCLK |  
| SWDIO | PA13 | 54 | 53 | PA12 |  |  
|  | PA11 | 52 | 51 | PA10 | USART1_RX |  
| USART1_TX | PA9 | 50 | 49 | PA8 |  |  
|  | U14 | 48 | 47 | U13 |  |  
|  | U16 | 46 | 45 | U15 |  |  
| Ground | GND | 44 | 43 | 3.3V | Regulated 3.3V |  
| Ground | GND | 42 | 41 | 5V |  |  |