VT82C42 Datasheet - VIA

VT82C42 Keyboard Controller

The internal timer counting is based on an 8Mhz clock input from X1, X2 ( or X2, with X1 connected to ground). After the deassertion of RESET#, the VT82C42 will drive high at pin P23 and pin P27. After 6 µs (6 x 8 clocks) of driving, the VT82C42 will check on pins T1 & P10; if both pins are low, th.

VT82C42 KEYBOARD CONTROLLER Preliminary Release DATE : November 22, 1995 VIA TECHNOLOGIES, INC. PRELIMINARY DOCUMENT RELEASE The material in this document supersedes all previous documentation issued for any of the products included herein. Please contact VIA Technologies for the latest documentation. Copyright Notice: Copyright © 1995, Via Technologies Incorporated. Printed in Taiwan. ALL RIGHTS RESERVED. No part of this document may be reproduced, transmitted, transcribed, stored in a retrie.

VT82C42_ETC.pdf