eKK8301
Keyboard Encoder
Product
Specification
D
OC
. V
ERSION
1.0
ELAN MICROELECTRONICS CORP.
August 2002
Trademark Acknowledgments:
IBM is a registered trademark and PS/2 is a trademark of IBM.
Windows is a trademark of Microsoft Corporation.
ELAN and ELAN logo
are trademarks of ELAN Microelectronics Corporation.
Copyright
2005 by ELAN Microelectronics Corporation
All Rights Reserved
Printed in Taiwan
The contents of this specification are subject to change without further notice. ELAN Microelectronics assumes
no responsibility concerning the accuracy, adequacy, or completeness of this specification. ELAN
Microelectronics makes no commitment to update, or to keep current the information and material contained in
this specification. Such information and material may change to conform to each confirmed order.
In no event shall ELAN Microelectronics be made responsible for any claims attributed to errors, omissions, or
other inaccuracies in the information or material contained in this specification. ELAN Microelectronics shall
not be liable for direct, indirect, special incidental, or consequential damages arising from the use of such
information or material.
The software (if any) described in this specification is furnished under a license or nondisclosure agreement, and
may be used or copied only in accordance with the terms of such agreement.
ELAN Microelectronics products are not intended for use in life support appliances, devices, or systems. Use of
ELAN Microelectronics product in such applications is not supported and is prohibited.
NO PART OF THIS SPECIFICATION MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR
BY ANY MEANS WITHOUT THE EXPRESSED WRITTEN PERMISSION OF ELAN
MICROELECTRONICS.
ELAN MICROELECTRONICS CORPORATION
Headquarters:
No. 12, Innovation Road 1
Hsinchu Science Park
Hsinchu, Taiwan 30077
Tel: +886 3 563-9977
Fax: +886 3 563-9966
http://www.emc.com.tw
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Elan (HK) Microelectronics
Corporation, Ltd.
Rm. 1005B, 10/F Empire Centre
68 Mody Road, Tsimshatsui
Kowloon , HONG KONG
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Fax: +852 2723-7780
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Elan Information
Technology Group
1821 Saratoga Ave., Suite 250
Saratoga, CA 95070
USA
Tel: +1 408 366-8223
Fax: +1 408 366-8220
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Elan Microelectronics Corp.
(Europe)
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8050 Zurich, SWITZERLAND
Tel: +41 43 299-4060
Fax: +41 43 299-4079
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Shenzhen:
Elan Microelectronics
Shenzhen, Ltd.
SSMEC Bldg., 3F, Gaoxin S. Ave.
Shenzhen Hi-Tech Industrial Park
Shenzhen, Guandong, CHINA
Tel: +86 755 2601-0565
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Shanghai:
Elan Microelectronics
Shanghai Corporation, Ltd.
23/Bldg. #115 Lane 572, Bibo Road
Zhangjiang Hi-Tech Park
Shanghai, CHINA
Tel: +86 021 5080-3866
Fax: +86 021 5080-4600
Contents
Product Specification (V1.0) 08.07.2002
iii
Contents
1 General
Description .................................................................................................. 1
2 Features ..................................................................................................................... 1
3 Applications............................................................................................................... 1
4 Pin
Configuration ...................................................................................................... 2
5 Pin
Description.......................................................................................................... 3
6 Function
Descriptions .............................................................................................. 4
6.1 Keyboard
Buffer ................................................................................................. 4
6.2 Power-on Reset and Self Test............................................................................ 4
6.3 Keyboard Data Output........................................................................................ 4
6.4 Keyboard Data Input .......................................................................................... 4
6.5 Command from the System................................................................................ 5
6.6 Command to the System.................................................................................... 9
6.7 Keyboard Scan Code Table................................................................................ 9
6.8 Internal-Multi
Function...................................................................................... 19
6.9 Application
Function ......................................................................................... 19
7
Absolute Maximum Ratings ................................................................................... 20
8
DC Electrical Characteristics ................................................................................. 20
9
AC Electrical Characteristics ................................................................................. 20
10 Timing
Diagrams ..................................................................................................... 21
11 Application
Circuit .................................................................................................. 22
12 Application
Matrix ................................................................................................... 23
13 PAD
Diagram............................................................................................................ 24
Contents
iv
Product Specification (V1.0) 08.07.2002
Specification Revision History
Doc. Version
Revision Description
Date
1.0
2002/08/07
eKK8301
Keyboard Encoder
Product Specification (V1.0) 08.07.2002
1
(This specification is subject to change without further notice)
1 General
Description
The eKK8301 microcontroller is dedicated to a keyboard encoder, specially designed
for IBM PC AT and all compatible machines. The eKK8301 control all scan codes,
three LEDs status, scan timing and communications between the keyboard and PC.
It is easy to implement a high performance, low cost keyboard with the minimal
external components.
2 Features
Low cost - eliminate need external components.
Phantom key detects.
RC oscillator (1.8432MHz).
Support scan code set 1, 2 and 3.
Support PC AT and PS/2 keyboard.
Low power CMOS device technology.
Internal pull-up resistor.
Tri-state outputs for easy board application.
Built-in 4K ROM.
Support WINDOWS
TM
95, 98, 2000, ME keys.
104/107 keys with multi-media or other special application keyboard encoder.
WINDOWS is registered trademarks of Microsoft corporation.
3 Applications
IBM PC AT or compatible machine keyboard.
IBM PS/2 model 30, 50, 60, 80 or compatible machine keyboard.
Japanese keyboard.
Korean keyboard.
Brazilian keyboard.
European keyboard.
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