SD6830

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 transistor to drive infrared LED. The SD6830 is supported with a software w development tool, which allows code development in a PC environment. It allows the user to simulate the SD6830 on an instruction level. 2. Features Number of basic instructions ------------------------------------- 45 Instruction cycle time (one word instruction) At Fsys=480KHz ---------------------------------------- 16.67uS At Fsys=455kHz ---------------------------------------- 17.58uS Memory size ROM --------------------------------------------------- 1024 x 8 Bits RAM ------------------------------------------------------ 32 x 4 Bits Input ports (D0 ~ D3, E0 ~ E3 : with pull-up resistor) Output ports (C, G, K, F0 ~ F7) Carrier frequency generator Fsys/12 (1/2 duty), Fsys/12 (1/3 duty), Fsys/12 (1/4 duty), Fsys/8 (1/2 duty), Fsys/8 (1/4 duty), Fsys/11 (4/11 duty), No carrier Watchdog Timer Built-in power on reset Single power supply ------------------------------------------------ 1.8V ~ 3.6V Power dissipation (stop mode , VDD = 3V) ----------------------- Less than 3uW Package -------------------------------------------...