GENERAL DESCRIPTION
On chip memory includes 2K words ROM and80 bytes static RAM. Four comparator inputs with external Vref (not for 18 pin package) are also provided. u u u XTAL¡ÐStandard crystal oscillator HFXT¡ÐHigh frequency crystal oscillator 4 oscillator start-up time can be selected by programming option: 150 µs, 20 ms, 40 ms, 80 ms On-chip RC oscillator based Watchdog Timer(WDT) can be operated freely 12 I/O(for 18 pins package),14 I/O(for 20 pins package),16 I/O(for 22/24 pins package) pins with their own independent direction control 2. FEATURES
u u u u Fully CMOS static design 8-bit data bus On chip ROM size : 2 K words Internal RAM size : 80 bytes (72 general purpose registers, 8 special registers) u u u u u u 36 single word instructions 14-bit instructions 2-level stacks Operating voltage : 2.3V ~ 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 u Addressing modes includ...
Micon Design
