I2C Interface Board For 16×2, 20×2, 20×4 Character LCD Module

This is a I2C Interface Board for 16×2, 20×2, 20×4 Character LCD Module 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 I2C Board LCD Module 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

• The contrast is adjusted by larger potentiometer for easy access
• Serial Interface: I2C
• Compatible with 1602, 20×2, 16×4, 20×4 character LCD Modules
• Operating voltage range: 2.6V – 6.0V
• Chip: PCF8574T
• Configurable I2C Addresses (0 – 7) through A0, A1, A2 pcb jumpers.
• Up-to eight IO Expander Modules can be connected on single I2C Bus
• Compatible LCD Controllers: HD447800, KS0066, KS0077, or compatibles
• LCD Data bus width utilized: 4 Data Bits.

Applications

• Arduino LCD Interfacing
• Raspberry-Pi LCD Interfacing
• Beagle Board LCD interfacing