How to Use: SPI Interface: 1. GND for power ground. 2. VCC for positive pole of power supply. 3. SCL for clock line. 4. SDA for data cable. 5. RES for reset line. 6. DC for data and command. 7. CS for film selection. 8. The seventh cable of CS is in default value. If not, you can directly ground the CS through R18 at this time, which is very convenient to operate. 9. This module defaults to SPI interface and this Organic Light Emitting Diode display, it is recommend for SPI communication.