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Preliminary

Features

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Multimedia Keyboard Encoder OTP

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HT82K68E

Operating voltage: 2.8V~5.5V

34(42-pin)/32(40-pin) bidirectional I/O lines

One 8-bit programmable timer counter with

overflow interrupts

Crystal or RC oscillator

Watchdog Timer

3K麓16 OTP EPROM

160麓8 data RAM

HALT function and wake-up feature reduce

power consumption

Six-level subroutine nesting

Bit manipulation instructions

16-bit table read instructions

63 powerful instructions

All instructions in 1 or 2 machine cycles

40/42-pin DIP package

General Description

The HT82K68E is an 8-bit high performance

peripheral interface IC, designed for multiple

I/O products and multimedia applications. It

supports interface to a low speed PC with

multimedia keyboard or wireless keyboard in

Windows 95, Windows 98 or Windows 2000 en-

vironment. A HALT feature is included to re-

duce power consumption.

The program and option PROM can be electri-

cally programmed making the HT82K68E suit-

able for use in product development.

1

August 8, 2000

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