General Description

The device are 8-bit, high performance, RISC architec ture microcontroller devices specifically designed for A/D applications that interface directly to analog signals, such as those from sensors.

Features

• Operating voltage:

      fSYS=4MHz: 2.2V~5.5V

      fSYS=8MHz: 3.3V~5.5V

• 16 bidirectional I/O lines

• Two 8-bit programmable timer/event counter with overflow interrupt and 7-stage prescaler

• One 8-bit programmable pulse generators (PPG) output channel, with prescaler and 8-bit program mable timer counter, and supports active low or active high output

• On-chip crystal and RC oscillator

• Watchdog Timer

• 2048 X 14 program memory

• 88 X 8 data memory RAM

• Supports PFD for sound generation

• HALT function and wake-up feature reduce power consumption

• Up to 0.5μs instruction cycle with 8MHz system clock at VDD=5V

• 8-level subroutine nesting

• 4 channels 9-bit resolution A/D converter

• Two comparators with interrupt function

• Bit manipulation instruction

• 14-bit table read instruction

• 63 powerful instructions

• All instructions in one or two machine cycles

• Low voltage reset function

• 24-pin SKDIP/SOP package