Raspberry Pi special yellow and green screen LCD1602 LCD module with backlight 5v

Description

1602 adopts standard 16-pin interface, among which:

Pin 1: VSS is ground power

Pin 2: VDD should be connected to 5V positive power

Pin 3: V0 is LCD display contrast adjustment terminal. Contrast is the lowest when connected to positive power and highest when connected to ground power. Over-high contrast may lead to tailing phenomena. Contrast can be adjusted through a 10K potentiometer during usage.

Pin 4: RS is register select. Select data register when level is high; select command register when level is low.

Pin 5: R/W is Read/Write signal line. Read when level is high; write when level is low. We can write command or display address when RS and RW are both of low level.; we can read busy signal when RS is of low level and RW is of high level; we can write data when RS is of high level and RW is of low level.

Pin 6: Port E is enable pin. Display module will execute command when port E jumps from high level to low level.