I2C LCD Module – Pinout and Specifications | New Topic [2024]

In this note, we are going to learn about I2C LCD Module and also about its Pinout and Specifications as well. Welcome to Poly Notes Hub, a leading destination for polytechnic notes for diploma engineering students.

Author Name: Arun Paul.

What is I2C LCD Module?

The I2C LCD module is a form of liquid crystal display (LCD) screen that interacts using the Inter-Integrated Circuit (I2C) protocol. This protocol enables simple communication between microcontrollers and peripheral devices, with minimal wire required. The I2C LCD module is normally made up of a display screen, a tiny circuit board, and an I2C interface chip. It is often used in electronics projects, such as Arduino-based projects, to show information in an easy-to-read format without requiring a large number of input/output pins on the microcontroller.

Specifications of I2C LCD Module

Below we describe some I2C LCD Module Specifications –

• Display type: Typically a regular character LCD (16×2, 20×4, etc.) or graphical LCD.
• Communication protocol: I2C (Inter-Integrated Circuit).
• Interface Chip: Integrated circuit that handles I2C connection.
• Supply Voltage: The operating voltage required by the module to work properly (for example, 5V or 3.3V).
• Backlight: Some modules include an integrated backlight, which is often adjustable or programmable via software.
• Contrast Control: The ability to change the contrast between the displayed characters.
• Operating temperature: The temperature range at which the module can perform reliably.
• Dimensions: The module’s physical dimensions, which include the display screen size and total module size.
• Compatibility: Details on which microcontrollers or development boards the module is compatible with, such as Arduino, Raspberry Pi, and others.

I2C LCD Module Pinout

Here we listed about the I2C LCD Module Pinout and their function –

• VCC: Power supply voltage input (5V or 3.3V).
• GND: Ground connection.
• SDA: Serial Data Line for I2C Communication.
• SCL: Serial Clock Line for I2C Communication.
• Backlight Jumper: For controlling the LCD Module backlight.
• POT: For controlling the contrast of the LCD display.
• Power LED: It is indicates whether the I2C module ON or not.