General Description

This device is Flash Memory with 8-bit high performance RISC architecture microcontroller device

which includes a host of fully integrated special features specifically designed for the brushless DC

motor applications.

Features

CPU Features

• Operating Voltage:

♦ fSYS=32kHz ~ 20MHz: 4.5V~5.5V

• Up to 0.2μs instruction cycle with 20MHz system clock at VDD=5V

• Power down and wake-up functions to reduce power consumption

• Two oscillators:

♦ Internal 20MHz RC - HIRC

♦ Internal 32kHz RC - LIRC

• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP

• All instructions executed in one or two instruction cycles

• Table read instructions

• 63 powerful instructions

• Up to 8-level subroutine nesting

• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 4K×15

• RAM Data Memory: 256×8

• EEPROM Memory: 128×8

• Watchdog Timer function

• Up to 28 bidirectional I/O lines

• Six pin-shared external interrupts

• Support IR cord Noise Filter function

• Four 10-bit CTMs for Buzzer, RMT, up/down or left/right fan-head

• Single 16-bit CTM for BLDC sensorless application

• Single 16-bit CAPTM for motor protect

• Two 8-bit RMTs for IR decode

• A pair of 10-bit PWM with comlementary outputs for BLDC application

• 9-channel 10-bit resolution A/D converter

• Time-Base function for generation of fixed time interrupt signal

• Single operational Amplifier for current detect

• Two comparators with interrupt functions

• Dual 8-bit D/A Converter

• Low voltage reset function

• Low voltage detect function

• Package types: 16-pin NSOP, 28-pin SOP/SSOP/SKDIP, 44-pin QFP