| SWCLK | SWDIO | TX1 | RX1 |
|---|---|---|---|
| PD1 | PD5 | PD6 |
Pin Alternate Functions [ALL] [ADC] [I2C] [SPI] [SYS] [TIM] [UART/USART] [USB]
- en [CH32V003DS0.PDF] [CH32V003RM.PDF]
- zh [CH32V003DS0.PDF] [CH32V003RM.PDF]
| CH32V003A4M6(SOP16) | CH32V003F4P6(TSSOP20) | CH32V003F4U6(QFN20) | CH32V003J4M6(SOP8) | Pin name | Pin type | Main function(after reset) | Note |
|---|---|---|---|---|---|---|---|
| 12 | 5 | 2 | 1 | PA1 | I/O/A | PA1 | not available |
| 13 | 6 | 3 | 3 | PA2 | I/O/A | PA2 | not available |
| 16 | 10 | 7 | - | PC0 | I/O | PC0 | |
| 1 | 11 | 8 | 5 | PC1 | I/O/FT | PC1 | |
| 2 | 12 | 9 | 6 | PC2 | I/O/FT | PC2 | |
| 3 | 13 | 10 | - | PC3 | I/O | PC3 | |
| 4 | 14 | 11 | 7 | PC4 | I/O/A | PC4 | |
| - | 15 | 12 | - | PC5 | I/O/FT | PC5 | |
| 5 | 16 | 13 | - | PC6 | I/O/FT | PC6 | |
| 6 | 17 | 14 | - | PC7 | I/O | PC7 | |
| - | 8 | 5 | - | PD0 | I/O/A | PD0 | |
| 7 | 18 | 15 | 8 | PD1 | I/O/A | PD1 | SWDIO |
| - | 19 | 16 | - | PD2 | I/O/A | PD2 | |
| - | 20 | 17 | - | PD3 | I/O/A | PD3 | |
| 8 | 1 | 18 | 8 | PD4 | I/O/A | PD4 | |
| 9 | 2 | 19 | 8 | PD5 | I/O/A | PD5 | TX1 |
| 10 | 3 | 20 | 1 | PD6 | I/O/A | PD6 | RX1 |
| 11 | 4 | 1 | - | PD7 | I/O/A | PD7 |
