| Serial Number | Symbol | Function Description |
|---|---|---|
| 1 | GND | Power supply ground |
| 2 | VCC | Positive 3.3V |
| 3 | SCL | SPI Clock line |
| 4 | SDA | SPI Data cable |
| 5 | RES | LCD Reset |
| 6 | DC | LCD Data/Command selection pin |
| 7 | CS | LCD Display screen chip selection signal, low level is effective |
| 8 | BLK | Backlight control switch, with backlight on by default and off at low levels |