Holtek Semiconductor Inc HT82M39A Datasheet

3D PS/2 Mouse Controller

Feature

Microsoft Intelli 3D PS/2 and IBM PS/2

·

mouse compatible
Supports rolling buttons in PS/2 mouse

·

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

·

special dynamic photo-input resistor
Supports three buttons and three axis (X,

·

Y, Z) inputs

General Description

The HT82M39A is a Plug and Play PS/2 3D
mouse controller. It is compatible with
Microsoft Intelli 3D PS/2 mouse. The Z axis can

Pin Assignment

HT82M39A

Z axis can support two kinds of scroller input

·

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

·

with an external pull-high resistor
16-pin DIP

·

support two kinds of scroller input, namely;
optomechanical and mechanical.

Z1

Z2

VDD

NC

VSS

OSCI

CLK

DATA

16

1

15

2

14

3

13

4

12

5

11

6

10

7

9

8

H T82M 39A

16 D IP

Y2

Y1

X2

X1

TEST

LB

R0

RB

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HT82M39A

Pin Description

Pin No. Pin Name I/O Description

1, 2 Z1, Z2 I

3 VDD I Positive power supply pin

4 NC No connection

5 VSS I Negative power supply pin

6 OSCI I

7 CLK I/O

8 DATA I/O

9~11 RB, RO, LB I

12 TEST I For IC manufacture testing, user should leave it floating.

13~16 X1, X2, Y1, Y2 I

²Z² axis input supports two kinds of scroller input; optomechanical
and mechanical.

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

²CLK I/O²: PS/2 mouse CLK line. NMOS open drain output with
5kW pull-high resistor.

²DATA I/O²: 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.

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

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

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-

HT82M39A

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

3 August 5, 1999