m o c . SD6830 Semicond uctor U 4 4BIT MICROCONTROLLER t e e h 1. Description S control transmitter, consists of the optimized 4-bit CPU with ROM and a SD6830 is a remote at power-on reset, watchdog timer and carrier frequency generator. The RAM. It contains .D SD6830 provide a various carrier frequency for encoding output of key matrix and has w built-in w ...