2004 LCD module displays 4 lines of 20 characters. It is ideal for electronics projects that have displayed more information. It can be used easily and in low light conditions because it has light and backlight.Backlight also need to be protected by resistance or potentiometer 2k. To reduce the pins that you will use to connect the LCD to the controller you can use an I2C module.
Specifications:
Voltage: 5V;
Current: 2 mA;
Backlight supply voltage: 4.2V;
Backlight current: 250mA (MAX).
Dimensions: 98mm x 60mm x 14mm
Connections:
pine 1: ss;
pine 2: VDD;
pine 3: Vo – LCD contrast (between VSS and VDD V);
pine 4: RS;
pin 5: R / W;
pine 6: E – enable;
Pine 7-14: DB0 – DB7;
15 pin: V + backlight;
pin 16: backlight V-
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