Pin Description

Pin No.

Pin Name

I/O

Description

1, 2

Z1, Z2

I ²Z² axis input supports two kinds of scroller input; optomechanical

and mechanical.

3

VDD

I Positive power supply pin

4

NC

No connection

5

VSS

I Negative power supply pin

6

OSCI

I 2MHz RC oscillator for system frequency with external pull-high

resistor and built-in C

7

CLK

I/O ²CLK I/O²: PS/2 mouse CLK line. NMOS open drain output with

5kW pull-high resistor.

8

DATA

I/O ²DATA I/O²: PS/2 mouse DATA line. NMOS open drain output with

5kW pull-high resistor.

9~11

RB, RO, LB

I

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.

12

TEST

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

13~16

X1, X2, Y1, Y2

I 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

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

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

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.

HT82M39A

2

August 5, 1999