HT82K628A datasheet, PDF - EEWORLD Datasheet

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HT82K628A: CategoryOther integrated circuit (IC) Consumption circuit; File Size168KB，22 Pages; ManufacturerHoltek; Websitehttp://www.holtek.com/

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HT82K628A Parametric

Parameter Name	Attribute value
Maker	Holtek
package instruction	SSOP,
Reach Compliance Code	unknown
Commercial integrated circuit types	CONSUMER CIRCUIT
JESD-30 code	R-PDSO-G48
length	15.875 mm
Number of functions	1
Number of terminals	48
Maximum operating temperature	70 °C
Minimum operating temperature	-25 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
Maximum seat height	2.76 mm
Maximum supply voltage (Vsup)	5.25 V
Minimum supply voltage (Vsup)	3 V
surface mount	YES
Temperature level	OTHER
Terminal form	GULL WING
Terminal pitch	0.63 mm
Terminal location	DUAL
width	7.493 mm

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HT82K628A

Windows 2000 PS/2 Keyboard Encoder

Features

Design for Windows 95/98/NT/2000/XP

Supports Windows

101/102/104/105/107/109 keys or other special ap-

keys

plication keyboard encoder

8 external hot keys

Supports Mini-keyboard and Internet/Multimedia

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

keyboard

WINDOWS is a registered trademark of Microsoft

corporation

40-pin DIP, 48-pin SSOP packages

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.

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.

Pin Assignment

R 5

1 0

1 1

1 2

1 3

1 4

1 5

1 6

1 7

1 8

1 9

2 0

2 1

2 2

2 3

2 4

R 4

C 3

C 2

R 5

1 0

1 1

1 2

1 3

1 4

1 5

1 6

1 7

1 8

1 9

2 0

R 4

C 3

C 2

C 1

C 0

R 3

R 2

R 1

R 0

R 1 9

R 1 8

R 1 7

R 1 6

V S S

S C R O L L

N U M

D A T A

C L O C K

F n S e le c t

4 0

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

2 4

2 3

2 2

2 1

R 6

R 7

C 4

C 5

C 6

C 7

N C

O S C 1

V D D

R E S E T

C A P S

R 8

R 9

R 1 0

R 1 1

R 1 2

R 1 3

R 1 4

R 1 5

M a c r o K e y s e le c t

C 1

C 0

R 3

R 2

R 1

R 0

N C

R 1 9

R 1 8

R 1 7

R 1 6

V S S

S C R O L L

N U M

D A T A

C L O C K

F n S e le c t

N C

4 8

4 7

4 6

4 5

4 4

4 3

4 2

4 1

4 0

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

R 6

R 7

C 4

C 5

C 6

C 7

N C

O S C 1

V D D

R E S E T

C A P S

R 8

R 9

R 1 0

R 1 1

R 1 2

R 1 3

R 1 4

R 1 5

M a c r o K e y s e le c t

H T 8 2 K 6 2 8 A

4 0 D IP -A

H T 8 2 K 6 2 8 A

4 8 S S O P -A

Rev. 1.70

June 11, 2008

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