MCP23017 chip is compatible with 1602 and 12864 liquid crystal screens, through this module is switched, use I2C communication, only need two MCU I/Os to be able to realize the liquid crystal to drive the display. The potentiometer on the module can achieve contrast adjustment. You can also unplug the jump cap to turn off the backlight or adjust the brightness through PWM. Supply voltage: 5V the backlight and contrast is adjusted by potentiometer Compatible for 1602 LCD 2004 LCD 12864LCD Specification: Operating Voltage: 1.8 to 5.5V Operating Temperature: -40 to 125°C Interface: IC Max. Bus Frequency: 1700 kBits/s
Package Included: 1 x MCP23017 1602/2004/12864 LCD I2C IIC Interface Serial Adapter Expander Board Module
Instructions/schematic are NOT included. We don't provide technical assistance please make sure that you are familiar with the product before purchasing.