ht82k628a

Manufacturer Part Numberht82k628a
DescriptionHt82k628a -- Windows 2000 Ps/2 Keyboard Encoder
ManufacturerHoltek Semiconductor Inc.
ht82k628a datasheet
 


1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
16
17
18
Page 1/18

Download datasheet (155Kb)Embed
Next
Windows 2000 PS/2 Keyboard Encoder
Features
Design for Windows 95/98/NT/2000/XP
TM
Supports Windows
keys
Supports PC/AT and PS/2 code set 1, 2, 3
Supports Japanese , Korean , Brazilian and
European
RC oscillator
Phantom key detection
Low power consumption
General Description
The HT82K628A is a keyboard encoder designed for
IBM PC/AT, IBM PS/2 and all compatible machines.
The HT82K628A accepts keyboard inputs and provides
a 16-character first-in-first-out buffer in which data is
stored.
Pin Assignment
Rev. 1.60
HT82K628A
101/102/104/105/107/109 keys or other special ap-
plication keyboard encoder
8 external hot keys
Supports Mini-keyboard and Internet/Multimedia
keyboard
WINDOWS is a registered trademark of Microsoft
corporation
40-pin DIP package
An inexpensive RC oscillator can be used for the system
clock. Simple implementation of this device is an advan-
tage for high performance and low cost keyboard appli-
cations.
1
April 16, 2004

ht82k628a Summary of contents

  • Page 1

    ... Supports Japanese , Korean , Brazilian and European RC oscillator Phantom key detection Low power consumption General Description The HT82K628A is a keyboard encoder designed for IBM PC/AT, IBM PS/2 and all compatible machines. The HT82K628A accepts keyboard inputs and provides a 16-character first-in-first-out buffer in which data is stored. Pin Assignment Rev ...

  • Page 2

    ... Operating Temperature .......................... Test Conditions Min. Typ. Max. Unit V Conditions DD No load 4MHz 5V SYS =3. HT82K628A Ta= 5. MHz ...

  • Page 3

    ... Set Key Type - Typematic Set Key Type - Make/Break Set Key Type - Make Resend Reset The commands may be sent to the HT82K628A at any time and the HT82K628A will respond within 25ms ex- cept when performing the internal diagnostics or execut- ing a Reset command. EDH - Set/Reset Status Indicators Three status indicators on the keyboard-Num Lock, Caps Lock, and Scroll Lock-are accessible by the host ...

  • Page 4

    ... F5H - Default Disable The Default Disable command resets all conditions to the power on default states. The HT82K628A will re- spond with ACK, clears its output buffer, sets the default key types (scan code set 3 operation only) and typematic rate/delay, and clears the last typematic key. ...

  • Page 5

    ... FEH - Resend The HT82K628A issues a Resend command following receipt of an invalid input or any input with incorrect par- ity. If the host sends nothing to the HT82K628A, no re- sponse is required. Data Communications Data output If CLK=0, no transmission (keyboard is inhibited). ...

  • Page 6

    ... M 53 < > Shift (R) 58 Ctrl (L) 60 Alt (L) 61 Space 62 Alt (R) E0 38/ Ctrl (R) E0 1D/ Num Lock 91 7 Home End Ins 100 * 101 9 PgUp 102 6 103 3 PgDn 104 . Del 105 - 6 HT82K628A 2D/AD 2E/AE 2F/AF 30/B0 31/B1 32/B2 33/B3 34/B4 35/B5 36/B6 1D/9D 38/B8 39/B9 45/C5 47/C7 4B/CB 4F/CF 48/C8 4C/CC 50/D0 52/D2 37/B7 49/C9 4D/CD 51/D1 53/D3 4A/CA April 16, 2004 ...

  • Page 7

    ... / / / / Both Shift 52/ Left-Shift 35/ 35/ Both Shift 35/ HT82K628A Make/Break Code 4E/CE 7E/FE E0 1C/E0 9C 01/81 3B/BB 3C/BC 3D/BD 3E/BE 3F/BF 40/C0 41/C1 42/C2 43/C3 ...

  • Page 8

    ... Default 73/F3 Typematic 7B/FB 79/F9 70/F0 F1/ F0/ Make/Break code E0 6C/ 32/ 66/E0 E6 E065/ 67/ 68/ 69/ 6A/ 6D/ 22/ 24/ 10/ 19/ 30/ 2E/ 20/ 6B/ 21/ 26/ 1E/ 17/ 2D/ 11/ HT82K628A Alt 54/D4 Ctrl Make Make Make Make Make April 16, 2004 ...

  • Page 9

    ... Caps Lock 58/ 1C/ 1B/ 23/ 2B/ 34/ 33/ 3B/ 42/ 4B/F0 4B Rev. 1.60 HT82K628A Key Number Make/Break Code and Symbol 47 X 22/ 21/ 2A/ 32/ 31/ 3A/ < , 41/ > . 49/ 4A/ Shift (R) 59/F0 59 ...

  • Page 10

    ... / / E059 Left-Shift Both Shift 4A/ Shift/Ctrl E0 7C/ Base HT82K628A Make/Break Code 83/F0 83 0A/F0 0A 01/F0 01 09/F0 09 78/F0 78 07/F0 07 7E/F0 7E Num Lock / ...

  • Page 11

    ... WWW Stop WWW Forward WWW Back Media Play/Pause Stop Prev Track Next Track Volume+ Volume Mute My Computer Calculator Screen save Rec Rew Minimize Eject Rev. 1.60 HT82K628A Make/Break code Default E0 37/ Make/Break E0 3F/ Make/Break E0 5E/ Make/Break Make/Break code Default 51/F0 51 Typematic 67/F0 67 Make 64/F0 64 Make 13/F0 13 Make ...

  • Page 12

    ... Typematic 49 2A/F0 2A Typematic 50 32/F0 32 Typematic 51 31/F0 31 Typematic 52 3A/F0 3A Typematic 53 41/F0 41 Typematic 54 49/F0 49 Typematic *101-Key Keyboard Only **102-Key Keyboard Only Rev. 1.60 HT82K628A Key Make Default Number /Break Code Key State 55 4A/F0 4A Typematic 57 59/F0 59 Make/Break 58 11/F0 11 Make/Break 59 8B/F0 8B Make/Break 60 19/F0 19 Make/Break 61 29/F0 29 ...

  • Page 13

    ... Key Number and Function 56 Brazil BA0 131 Japanese J131 132 Japanese J132 133 Japanese J133 150 Korea KC-L 151 Korea KC-R Timing Diagrams Data Output Keyboard Data Input Rev. 1.60 Make/Break code Default 51/F0 51 Typematic 67/F0 67 Make 64/F0 64 Make 13/F0 13 Make F1/ Make Make F2/ 13 HT82K628A April 16, 2004 ...

  • Page 14

    ... PgUp End 1 2 PgDn Ins 0 Del . / / Enter(R) Enter(R) F11 F1 F12 F2 ScrLock F10 Page Up Page Down Home End 14 HT82K628A Num Fn Lock >. ?/ Enter(L) F11 F12 ScrLock Page Up Page Down Home End April 16, 2004 ...

  • Page 15

    ... HOME WWW F1/F11 Search Rec Rew Min Eject 00 000 F2/F12 WWW WWW WWW WWW Back Forward Stop Refresh / / / Page Down Home END 15 HT82K628A 116 1(!) 2 F1 2(@) 3 F2 3(#) 4 4($) 5 6(^) 7(&) 8 =(+) 8(*) _(-) PRINT SCREEN F9 F10 ...

  • Page 16

    ... Application Circuits Note: Fn Select GND: Enable the Mini Keyboard Macro Key Select GND: Disable the Macro Key Rev. 1.60 HT82K628A 16 April 16, 2004 ...

  • Page 17

    ... Package Information 40-pin DIP (600mil) Outline Dimensions Symbol Min. A 2045 B 535 C 145 D 125 595 I 635 0 Rev. 1.60 HT82K628A Dimensions in mil Nom. Max. 2065 555 155 145 20 70 100 615 670 15 17 April 16, 2004 ...

  • Page 18

    ... Holtek s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.60 HT82K628A 18 April 16, 2004 ...