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HT6542B Datasheet

IC型號：
HT6542B
PDF描述：
Keyboard Controller with PS/2
文件大小：
307.02KB
PDF頁數(shù)：
7頁
芯片廠家：
HOLTEK

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HT6542B

Keyboard Controller with PS/2

Features

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High reliability MOS technology

8042-type host interface

6MHz-12MHz operating frequency

Communicates with keyboard directly

Provides enhanced Gate A20 switching

Support PS/2 compatible mouse

Auto-detect AT and PS/2 motherboard

Support 40 pin DIP and 44 pin PLCC pack-

ages

General Description

The HT6542B is a keyboard controller devel-

oped by Holtek with a 4-bit microprocessor. It is

pin-to-pin compatible with Intel 8042 keyboard

controller used in IBM PC鈥檚. PC manufacturers

need not modify any printed wiring layout

when using the HT6542B in lieu of the Intel

8042 based keyboard controller. Furthermore,

the HT6542B can support a system clock speed

of up to 12MHz. The HT6542B can detect the

motherboard type automatically, therefore it

can be employed on both of AT and PS/2 moth-

erboard.

Pin Assignment

40 Pin DIP package

44 Pin PLCC package

1

30th Nov 鈥?5

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