The I2C LCD Serial Interface Adapter Module is an expander board built around the PCF8544 / PCF8574 I/O expander chip. Designed to piggyback onto standard alphanumeric LCD screens (such as 16x2 or 20x4 character displays), it converts a parallel 4/8-bit communication interface into a two-wire I2C protocol. This reduces the number of microcontroller I/O pins required to drive an LCD from up to 12 down to just 2 pins (SDA and SCL), leaving microcontrollers like Arduino, ESP32, and Raspberry Pi free for other sensors and peripherals.

This product is featured by Famephase Electronic Accessories as an essential module for simplifying display wiring and saving pinouts on microcontroller projects.