| Number |
Pin Label |
Description |
| 1 |
VCC |
Power positive(It is recommended to connect to 5V. When connected to 3.3V, the backlight brightness will be slightly dim) |
| 2 |
GND |
Power ground |
| 3 |
LCD_CS |
LCD selection control signal, Low level active |
| 4 |
LCD_RST |
LCD reset control signal, Low level reset |
| 5 |
LCD_RS |
LCD command / data selection control signal
High level: data, low level: command
|
| 6 |
SDI(MOSI) |
SPI bus write data signal(SD card and LCD screen used together) |
| 7 |
SCK |
SPI bus clock signal(SD card and LCD screen used together) |
| 8 |
LED |
LCD backlight control signal (If you need control, please connect the pins. If you don't need control, you can skip it) |
| 9 |
SDO(MISO) |
SPI bus read data signal (SD card and LCD screen used together) |
| 10 |
CTP_SCL |
Capacitive touch screen IIC bus clock signal |
| 11 |
CTP_RST |
Capacitor touch screen reset control signal, low-level reset |
| 12 |
CTP_SDA |
Capacitive touch screen IIC bus data signal |
| 13 |
CTP_INT |
Capacitor touch screen IIC bus touch interrupt signal, when generating touch, input low level to the main control |
| 14 |
SD_CS |
SD card selection control signal, low level active (without SD card function, can be disconnected) |