| Sequence Number | Symbol | Function Description |
|---|---|---|
| 1 | GND | Power ground |
| 2 | VCC | Power supply: 3.3V |
| 3 | SCL | SPI clock line |
| 4 | SDA | SPI data line |
| 5 | RES | Display screen reset pin |
| 6 | DC | Data/Command Selection Script |
| 7 | CS1 | Display screen chip select, with low level being the effective signal |
| 8 | BLK | LCD backlight control: By default, it can be left in an unconnected state. Low voltage will turn off the backlight |
| 9 | FSO | Output of font library data |
| 10 | CS2 | Chip select for font library chip |