1. General Description This EPROM-Based 8-bit micro-controller uses a fully static CMOS technology process to achieve higher speed and smaller size with the low power consump-tion and high noise immunity. On chip memory inclu-des 1K words of ROM, and 72 b ytes of static RAM. 2. Features The followings are some of the features on the hardware and software : ? Fully CMOS static design ? 8-bit data bus ? On chip EPROM size : 1K words ? Internal RAM size : 72 bytes ? 36 single word instructions ? 14-bit instructions ? 2-level stacks ? Operating voltage : 2.5 V ~ 5.5 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 ? 5 types of oscillator can be selected by programming option: INTRC-Internal 4 MHz RC oscillator RC-Low cost RC oscillator LFXT-Low frequency crystal oscillator XTAL-Standard crystal oscillator HFXT-High frequency crystal oscillator ? 3 oscillator start-up time can be selected by programming option: 20 ms, 40 ms, 80 ms ? 8-bit real time clock/counter(RTCC) with 8-bit programmable prescaler ? On-chip RC oscillator based Watchdog Timer(WDT) ? Wake-up from sleep on pin change 3. Applications The application areas of this MDT10P55B range from appliance motor control and high speed automotive to low power remote transmitters/receivers, small instruments, chargers, toy, automobile and PC pe-ripheral … etc.