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General Description

The Cost-Effective A/D Type MCU Devices are a series of 8-bit high performance RISC architecture

microcontrollers, designed especially for applications that interface directly to analog signals, such as those from sensors. All devices include an integrated multi-channel Analog to Digital Converter in addition to one or two Pulse Width Modulation outputs. The usual Holtek MCU features such as power down and wake-up functions, oscillator options, programmable frequency divider, etc. combine to ensure user applications require a minimum of external components.

Features

Operating voltage:

fSYS=4MHz: 2.2V~5.5V

fSYS=8MHz: 3.3V~5.5V

13 to 23 bidirectional I/O lines

External interrupt input shared with an I/O line

8-bit programmable Timer/Event Counter with over flow interrupt and 7-stage prescaler

On-chip crystal and RC oscillator

Watchdog Timer function

PFD for audio frequency generation

Power down and wake-up functions to reduce power consumption

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

4 or 6-level subroutine nesting

4 channels 8 or 9-bit resolution A/D converter

1 or 2 channel 8-bit PWM output shared with I/O lines

Bit manipulation instruction

Table read instructions

63 powerful instructions

All instructions executed in one or two machine cycles

Low voltage reset function

Range of packaging types