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MDT10P509，P509
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 consumption and high noise immunity. On chip memory includes 1K words of ROM, and 41 bytes of static RAM.
 
2. Features 
The followings are some of the features on the hardware and software :
 
  Fully COMS static design
  8-bit data bus
  On chip EPROM size : 1 K words  
  Internal RAM size : 41 bytes
  36 single word instructions
14-bit instructions
2-level stacks
  Operating voltage : 2.5V ~ 5.0V
  The most fast execution time is 500 ns under 8MHz 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
INTRC－Internal 4 MHz RC oscillator
INTRC－Internal 8 MHz RC oscillator
  2 oscillator start-up time can be selected by programming option: 20ms, 150us
  8-bit real time clock/counter(RTCC) with 8-bit programma ble prescaler
  On-chip RC oscillator based Watchdog
Timer(WDT) 
  Wake-up from sleep on pin change
 
3. Applications
The application areas of this P509 range from appliance motor control and high speed automotive to low power remote transmitters/receivers, small instruments, toy, automobile and PC peripheral …etc.