Pin Assignment

Pin Description

Pin No.

Pin Name

I/O

Description

1

VSS

¾ Negative power supply, ground

2

V33O

O

3.3V voltage output

3

USBD+/CLK

I/O USB data plus or PS2 Clock, F/W auto-detect USBD+ for USB, CLK for PS2

4

USBD

-/DATA

I/O USB data minus or PS2 Data, F/W auto-detect USB

- for USB, DATA for PS2

5

RESET

I

Chip reset input, low active

6, 9

SEL1

SEL0

I

Configuration selections

For ANDS 2051:

SEL0=0: 800DPI (default)

SEL0=1: 400DPI

SEL1=0: Z-axis is divided by 2 (default)

SEL1=1: Z-axis is divided by 4

For ANDS 2610/2620:

SEL1=0, SEL0=don

¢t care: Z-axis is divided by 2 (default)

SEL1=1, SEL0=0: Z-axis is divided by 4

7

SDIO

I/O Serial data for Agilent sensor IC SDIO

8

SCLK(PA5)

I

Serial data for Agilent sensor IC SCLK

10, 11

14, 15, 16

RB0, RB1

L, R, M

I

Click button detection. Input ports with 30k

W pull-high resistor.

Input ports with pull-high resistor. These pads can function as Left, Right, Middle,

B4 and B5 button input lines.

12, 13

Z1, Z2

I

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

17

LED

I/O Drives LED output

18

VDD

¾ 5V positive power supply

19

OSC2

O

6MHz OSC output

20

OSC1

I

6MHz OSC input

Absolute Maximum Ratings

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

-50°Cto125°C

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

-25°Cto70°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.

HT82M22A

Rev. 1.10

2

August 4, 2004

V S S

V 3 3 O

U S B D + / C L K

U S B D - / D A T A

R E S E T

S E L 1

S D I O

S C L K

S E L 0

R B 0

O S C 1

O S C 2

V D D

L E D

M

R

L

Z 2

Z 1

R B 1

H T 8 2 M 2 2 A

2 0 D I P - A

2 0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1

2

3

4

5

6

7

8

9

1 0