20x4 LCD Display Module - Green Display with I2C

The 20×4 LCD Display Module with I²C interface is a compact and versatile character display designed for embedded systems, microcontroller projects, and DIY electronics. With 20 characters per line across 4 lines, this module is ideal for showing more detailed information such as menus, sensor readings, system status, or text logs.

Equipped with an I²C serial interface, it drastically reduces the number of pins needed to connect to microcontrollers—requiring only two wires (SDA and SCL)—while maintaining full functionality. This makes it perfect for projects where GPIO pins are limited. The bright green backlight with black text ensures clear visibility even in low-light conditions.

Key Features

• 20 characters × 4 lines for extended text display

• I²C serial interface for simple wiring and easy integration

• Requires only two communication pins (SDA & SCL)

• Adjustable contrast and backlight

• Compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers

• Low power consumption

• Easy-to-use with standard LCD libraries

Specifications

• Display Type: Character LCD

• Display Format: 20 × 4 (20 characters per line, 4 lines)

• Interface: I²C (serial)

• Operating Voltage: 5V (compatible with 3.3V logic on some boards)

• I²C Address: Typically 0x27 or 0x3F

• Backlight: Green LED

• Controller: HD44780 compatible

• Dimensions: Approx. 98 mm × 60 mm

Pin Description

• VCC – Power supply (5V)

• GND – Ground

• SDA – I²C data line

• SCL – I²C clock line