Description
This 20x4 LCD module with an integrated HD44780 controller allows the display of 20x4 characters in black font on a green background. The display is controlled via an Arduino, Raspberry Pi, or similar. The display can be connected directly to the GPIO ports of the e.g. Arduino.
The assignment of the 16 contacts is as follows:
VSS: GND (ground
VDD: +5V supply voltage
V0: contrast voltage, this can be between 0V and 5V
RS: register, selection 0:command register, 1: data register
R/W: 1:Read/0:Write contacts
E: Enable
D0: Data line
D1: Data line
D2: Data line
D3: Data line
D4: Data line
D5: Data line
D6: Data line
D7: Data line
A: Anode of the backlight
K: Cathode of the backlight