Pin Connections:

1. RST--------- reset.

2. CE------------ chip selection.

3. DC----------- data/commands choice.

4. DIN----------- serial data line.

5. CLK------------ serial Clock Speed.

6. VCC---------- Power, 3.3V

7. LIGHT--------- backlight control terminal (GND).

8. GND-----------power negative.

Specification:

• Power supply voltage: 2.7V- 3.3V
• Backlight Power Supply Voltage: 3.3V MAX
• 43.6mm x 43.1mm(width X height)
• 84 x 84 dot matrix-LCD,can show 4 lines of characters, 12 Characters Per Line

Tutorial:

https://circuitdigest.com/microcontroller-projects...