The 3823 group is the 8-bit microcomputer based on the 740 family core technology. The 3823 group has the LCD drive control circuit, an 8-channel A/ D converter, a serial interface, a watchdog timer, a ROM correction function, and as additional functions. The various microcomputers in the 3823 group include variations of internal memory size and packaging. For details, refer to the section on part numbering.