WH1604B is a Character 16×4 LCD module which is built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel. These 16×4 LCD display modules are also available in SPI and I2C interface by using RW1063 controller IC. The LEDs can be driven by pin 1, pin 2, or pin 15 pin 16 or A/K. This type of module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃.
There are different interface options for WH1604B series, details as below:
►WH1604B : 6800 interface (ST7066 IC)
►WH1604B1 : SPI interface (RW1063 IC)
►WH1604B2 : I2C interface (RW1063 IC)