General Description

The HT82K68A 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 environment. A HALT feature is included to reduce power consumption.

Features

Operating voltage: 2.2V~5.5V

32/34 bidirectional I/O lines

One 8-bit programmable timer counter with overflow interrupts

Crystal or RC oscillator

Watchdog Timer

3K16 program ROM

1608 data RAM

One external interrupt pin (shared with PC2)

2.4V LVR by option (default disable)

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

20/28-pin SOP, 48-pin SSOP package