Holtek Semiconductor Inc HT82M398A Datasheet

WIN2000 3D PS/2 Mouse Controller

Features

Compatible with Microsoft Windows 2000

·

and 5-button Wheel Mouse
Compatible with Microsoft Intelli 3D PS/2

·

and IBM PS/2 mouse
Supports rolling buttons in PS/2 mouse

·

mode
X/Y axis photo input with built-in Holtek¢s

·

special dynamic photo-input resistor

General Description

The HT82M398A is a Plug and Play WIN2000
and 5-button 3D PS/2 mouse controller. It is
also compatible with Microsoft Intelli 3D PS/2

Pin Assignment

HT82M398A

Supports three buttons and three axes

·

(X, Y, Z) inputs
Z axis can support two kinds of scroller in

·

put (optomechanical and mechanical)
2MHz RC oscillator for system frequency

·

with external pull-high resistor
16-pin DIP package

·

and IBM PS/2 mouse. The Z axis can support
two kinds of scroller input, namely; mechanical
and optomechanical.

-

Z1

Z2

VDD

B5

VSS

OSCI

CLK

DATA

H T82M 398A

1

2

3

4

5

6

7

8

16 D IP

Y2

16

Y1

15

X2

14

X1

13

B4

12

LB

11

R0

10

RB

9

1 February 22, 2000

Pin Description

Pin No. Pin Name I/O Description

1, 2 Z1, Z2 I

3 VDD

4B5 I

5 VSS

6 OSCI I

7 CLK I/O

8 DATA I/O

9~11 RB, RO, LB I

12 B4 I

13~16 X1, X2, Y1, Y2 I

Z, axis input supports two kinds of scroller input, namely;
optomechanical and mechanical.

Positive power supply

¾

Button 5, normal pull-low (50kW), Press connect to high.

Negative power supply

¾

2MHz RC oscillator for system frequency with external pull-high
resistor and built-in Capacitor.

CLK I/O, PS/2 mouse CLK line. NMOS open drain output with 5kW
pull-high resistor.

DATA I/O, PS/2 mouse DATA line. NMOS open drain output with
5kW pull-high resistor.

Right Button: Normal pull-low (50kW),

Pressing the button connects to high.

Rolling Button: Normal pull-low (50kW),

Pressing the button connects to high.

Left Button: Normal pull-low (50kW),

Pressing the button connects to high.

Button 4, normal pull-low (50kW), Press connect to high.

X/Y axis photo input with built-in Holtek¢s special dynamic photo
input resistor

HT82M398A

Absolute Maximum Ratings

Supply Voltage..............................-0.3V to 6.5V

Input Voltage.................V

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-

mum Ratings² may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged expo
sure to extreme conditions may affect device reliability.

-0.3V to VDD+0.3V

SS

Storage Temperature.................-50°Cto125°C

Operating Temperature ..............-25°Cto70°C

2 February 22, 2000

-

HT82M398A

Electrical Characteristics

Symbol Parameter

V

DD

I

OP

f

OSC

V

IL1

V

IH1

V

IL2

V

IH2

R

PH2

Isink Sink Current (CLK, DATA) 5V

V

IL3

V

IH3

R

PL3

V

IL4

V

IH4

R

PL5

Operating Voltage

Operating Current 5V

RC Oscillator 5V

Input Low Voltage (Z1, Z2) 5V

Input High Voltage (Z1, Z2) 5V

Input Low Voltage (CLK, DATA) 5V

Input High Voltage (CLK, DATA) 5V

Pull-high Resistor (CLK, DATA) 5V

Input Low Voltage (RB, Ro, LB) 5V

Input High Voltage (RB, Ro, LB) 5V

Pull-low Resistor (RB, Ro, LB) 5V

Input Low Voltage (X1,X2,Y1,Y2) 5V

Input High Voltage (X1, X2, Y1, Y2) 5V

Dynamic Photo-resistor
(X1, X2, Y1, Y2, Z1, Z2)

Test Conditions

Conditions

V

DD

¾¾

=120kW¾¾

R

OSC

=120kW

R

OSC

¾

¾

¾

¾

V

=0V

IL

V

=0.4V

OH

¾

¾

V

=0V

IL

¾

¾

5V

¾

Ta=25°C

Min. Typ. Max. Unit

4.5 5.0 5.5 V

15 mA

1.6 2 2.2 V

0

2.2

0

2.0

2510

4

0

1.8

3.0 60 125

0

2.2

1.5 V

¾

¾

¾

¾

5V

0.8 V

5.0 V

¾¾

1.0 V

¾

¾

¾

¾

5V

1.5 V

5V

kW

mA

kW

See Dynamic resistor

characteristics

Dynamic resistor characteristics

·

R-V curve

R

Photo_R: R-V

V

3 February 22, 2000