MDT2020B Datasheet | Micon Design Technology

MDT2020B Spec. Ver 2.2 1. General Description This EPROM-Based 8-bit micro-controller uses a fully static CMOS design technology bines 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 : ! Fully S 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 ! 8-bit real time clock/counter(RTCC) with 8-bit programmable prescaler ! 4 types of oscillator can be selected by code options : RCLow cost RC oscillator LFXTLow frequency crystal oscillator XTALStandard crystal oscillator HFXTHigh frequency crystal oscillator ! On-chip RC oscillator based Watchdog Timer(WDT) can be operated freely ! 20 I/O pins with their own independent direction control 3. Applications MDT2020B Spec. Ver 2.2 The application areas of this MDT2020B range from appliance motor control and high speed automotive to low power remote transmitters/receivers, pointing devices, and telemunications processors, such as Remote controller, small instruments, chargers, toy, automobile and PC peripheral … etc. 4. Pin Assignment RTCC Vdd N/C Vss N/C PA0 PA1 PA2 PA3 PB0 PB1 PB2 PB3 PB4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 /MCLR 27 OSC1 26 OSC2 25 PC7 24 PC6 23 PC5 22 PC4 21 PC3 20 PC2 19 PC1 18 PC0 17 PB7 16 PB6 15 PB5 5. Pin Function Description Pin Name...