IIC/I2C Serial Interface Adapter Module
Smartiphi product

IIC/I2C Serial Interface Adapter Module

Part of Smartiphi's Modules, Interface Modules catalog for electronics projects, labs, classrooms, prototypes and DIY builds.

In stock Modules
89 115 (inc. GST)

In stock

5V power supply. Serial I2C control of LCD display using PCF8574. Backlight can be enabled or disabled via a jumper on the board. Contrast control via a potentiometer. Can have 8 modules on a single I2C bus (change address via solder jumpers)address.

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Product details

Product familyModules, Interface Modules
Stock signalIn stock
Order typeDirect product order

This is a RoHS compliant I2C Serial LCD Daughter board that can be connected to a standard 16×2 or 20×4 Character Display Module that supports 4-bit mode. All Character Modules sold on our site support 4-bit mode, and nearly all commercially available 16×2 and 20×4 line character modules support it too.

This board has a PCF8574 I2C chip that converts I2C serial data to parallel data for the LCD display. There are many examples on the internet for using this board with Arduino. Do a search for “Arduino LCD PCF8574“. The I2C address is 0x3F by default, but this can be changed via 3 solder jumpers provided on the board. This allows up to 3 LCD displays to be controlled via a single I2C bus (giving each one it’s own address)


Specifications and Features:

  1. 5V power supply.
  2. Serial I2C control of LCD display using PCF8574.
  3. Backlight can be enabled or disabled via a jumper on the board.
  4. Contrast control via a potentiometer.
  5. Can have 8 modules on a single I2C bus (change address via solder jumpers)address, allowing.
  6. Size :41.6 x 19.2 mm.

Package Includes:

1 x IIC/I2C Serial Interface Adapter Module

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