Built-in font with provision for up to 8 user-defined characters Speeds from 300 bps to 115.2 Kbps over RS-232 Communicate over RS-232, TTL compatible, SPI or I2C The I2C interface is capable of receiving data at up to 400KHz-clock rate Software controlled contrast Software controlled Backlight Easy commands for printing number on display All LONGTECH 16* 2, 20* 2, 20* 4 character LCD modules available