MDT2020

MDT2020 MDT2020 1. General Description This EPROM-Based 8-bit micro-controller uses a fully static CMOS design technology combines higher speed and smaller size with the low power and high noise immunity of CMOS. On chip memory system includes 2.0 K bytes of ROM, and 80 bytes of static RAM. 2. Features The followings are some of the features on the hardware and software : u u u u u u u u u u u u u u u Fully COMS static design 8-bit data bus On chip ROM size : 2 K words Internal RAM size : 80 bytes (72 general purpose, 8 special registers) 36 single word instructions 14-bit instructions 2-level stacks Operating voltage : 2.3 V ~ 6.3 V Operating frequency : 0 ~ 20 MHz The most fast execution time is 200 ns under 20 MHz in all single cycle instructions except the branch instruction. Addressing modes include direct, indirect and relative addressing modes Power-on Reset Power Edge-detector Reset Sleep mode for power saving 4 oscillator start-up time : 150 µs, 20 ms, 40 ms, 80 ms u 8-bit real time clock/counter(RTCC) with 8-bit programmable prescaler u 4 types of oscillator can be selected by code options : RC¡ÐLow cost RC oscillator LFXT¡ÐLow frequency crystal oscillator XTAL¡ÐStandard crystal oscillator HFXT¡ÐHigh frequency crystal oscillator u On-chip RC oscillator based Watchdog Timer(WDT) can be operated freely This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 1 VER 1.1 MDT2020 u 20 I/O pins with...