Character LCD 20×4 2004 (blue blacklight)

Character LCD 20×4 2004 (blue blacklight) is a high-quality electronic component designed for Arduino, prototyping, and educational electronics.

Product description: LCD display 4×20 characters
Alphanumeric LCD display. It presents values in four lines, 20 characters in each . It is powered by 5 V . It is characterized by extremely simple operation and support for many microcontrollers. Characters are displayed on green or blue background.
Display pinout description
The alphanumeric display has 12 pins, which are not marked on the board. Each of them corresponds in turn to:

1 – VSS – system ground
2 – VDD – 5V power supply
3 – V0 – contrast
4 – RS – select display instruction register (low state) or data register (high state)
5 – R/W – read (low state) / write (high state)
6 – E – unlocking the display
7…14 – DB0…DB7 – data bus
15 – LEDA – backlight power supply 5 V
16 – LEDK – backlight gND

Product compatible with Arduino
In standard set of libraries and sample programs downloaded from Arduino IDE environment, there is LiquidCrystal library, which allows to operate presented display.

Technical specification of the display

Type: alphanumeric LCD display
LCD display 4 x 20 characters
Character colour: black in green backlight
Character colour: white in blue backlight
Backlight: green or blue
Hole spacing: 93 x 55 mm
Supply voltage: 5 V
Module dimensions: 98 x 60 mm

Display pinout description
The alphanumeric display has 12 pins, which are not marked on the board. Each of them corresponds in turn to:

1 – VSS – system ground
2 – VDD – 5V power supply
3 – V0 – contrast
4 – RS – select display instruction register (low state) or data register (high state)
5 – R/W – read (low state) / write (high state)
6 – E – unlocking the display
7…14 – DB0…DB7 – data bus
15 – LEDA – backlight power supply 5 V
16 – LEDK – backlight system common ground

It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.