Pin Description

Pin Name

I/O

Description

RB, RO, LB

I

Right Button: Normal pull-high resistor (30k

W)

Rolling Button: Normal pull-high resistor (30k

W)

Left Button: Normal pull-high resistor (30k

W)

Z2/A, Z1/B

I

²Z² axis input supports three kinds of scroller input

Normal pull-high resistor (30k

W)

RB1, RB0

I

Input ports with 30k

W pull-high resistor

SDIO

I/O Serial data for PixArt sensor IC SDIO

SCLK

O

Serial data for PixArt sensor IC SCLK

VSS

¾ Negative power supply, ground

RES

I

Chip reset input, low active

VDD

¾ 5V positive power supply

OSCI

I

2MHz RC oscillator for system frequency with external pull-high resistor (140k

W)

NC

¾ No connection

PS2CK

I/O PS/2 mouse CLK line

PS2D

I/O PS/2 mouse data line

Absolute Maximum Ratings

Storage Temperature ............................

-50°Cto125°C

Operating Temperature...........................

-40°Cto85°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum 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 exposure to extreme conditions may affect device reliabil-

ity.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

4.0

5.0

5.5

V

Operating Current

5V

¾

2.5

4

mA

Input Low Voltage for RB, LB, RO, Z1,

Z2, RB1, RB0, SDIO, PS2CK and PS2D

¾¾

0

¾

V

Input High Voltage for RB, LB, RO, Z1,

Z2, RB1, RB0, SDIO, PS2CK and PS2D

¾¾

¾

V

Input Low Voltage for RES

¾¾

0

¾

V

Input High Voltage for RES

¾¾

¾

V

I/O Port Sink Current

5V

10

20

¾

mA

I/O Port Source Current

5V

-2

-4

¾

mA

Pull-high Resistance for RB, LB, RO, Z1,

Z2, RB1, RB0, SDIO, PS2CK and PS2D

5V

¾

10

30

50

k

W

HT82M32A/HT82M32B

Rev. 1.00

2

January 24, 2006