1. general description
this 8-bit micro-controller with built-in carrier
generator uses a fully static cmos technology
to achieve high speed, small size, low power
and high noise immunity.
on chip memory includes 2 k words of flash
rom, and 256 bytes of eeprom, and 80 bytes
of static ram..
2. features
? fully cmos static design
? 8-bit data bus
? on chip flash rom size : 2k words
? internal ram size : 80 bytes
(80 general purpose registers)
? 256 bytes of eeprom
? 37 single word instructions
? 14-bit instructions
? 8-level stacks
? operating voltage : 2.0v ~ 3.6 v
? timer0 : 8-bit timer with 3-bit prescaler
? power-on reset
? internal rc 4mhz or 8mhz system clock by
option
? oscillator type : hf and auto detect
external crystal on board
? pa0-3 : 4 i/o pins with pull-high input
? pa4-7 : 4 input only pins with pull-high
resistor and pa0-7 input low wakeup detect
circuit
? pb0 (ir) : cmos output
? option used pb0 nmos replace bjt
? pb1~7 : seven open drain output pins
? built in remote control carrier synthesizer
by firmware setting