Arduino LCD Display Module 16×2 Character

Arduino LCD Display Modules are mostly used in embedded projects, because of its affordability and availability. The 16×2 Display LCD Module represents 16 Columns and 2 Rows. There are so many other combinations like 8×1, 8×2, 10×2, 16×1 and so on. However, 16 x 2 display LCD is most commonly used.

Arduino 16×2 LCD Display Module has 16 characters by a 2-line LCD display screen with an I2C interface. It displays 2 lines of 16 characters, white characters are displayed on a blue background.

This I2C 16×2 Arduino LCD Display Module uses the I2C communication interface. This means that we can use 4 pins for the display that is: VCC, GND, SDA, SCL. Thus, it gives us the advantage of saving 4 digital / analog pins on Arduino.

Pin Description

However, the basic 16×2 Arduino LCD Module has standard 16 pins

Pin no.	Symbol	Arduino connection	Description
1	VSS	GND Arduino	Ground power
2	VDD	5 V Arduino	Power voltage for LCD
3	V0	10 k ohm potentiometer	Contrast adjustment terminal connected to VDD
4	RS	Pin 2 Arduino	Select the instruction register i-e high and low
5	R/W	GND Arduino	read and write a signal line, at high read operation, write operation is low and vice versa.
6	E	Pin 3 Arduino	Indicates enable signal
7-14	D0 to D7		8-bit data bus lines
11-14	D4 to D7	Pin 4 to 7 Arduino	Data bus lines used for 4-bit mode
15	A (LED+)	5 V Arduino	LCD backlight for positive
16	K (LED-)	GND Arduino	LCD backlight for negative

Specification

Parameter	Specification
Power voltage	5 v
Screen resolution	16 characters by 2 lines
Module size	80x36x12 mm
Display size	64.5 x 16.4 mm

Features

• Ampere usage is 1mA without backlight
• The module has an Alphanumeric LCD display and displays alphabets and numbers
• The module can print 16 characters in each of the 2 rows.
• Each character has a resolution of 5 to 8 pixels.
• Easily works on both 8-bit and 4-bit mode
• Available in Green and Blue Backlight in the market