PixArt Imaging Inc.

PAW3502

USB Optical Mouse Sensor Single Chip

1. Pin Configuration

2

1.1 Pin Description

Pin # Name

Type

Definition

1

OSCIN

IN

Oscillator input, connected to resonator or resistor

2

BL

IN

Button left key input, normal pull-high (50k), press connect to low

3

LED

OUT

LED control

4

VDDQ

BYPASS I/O voltage reference

5

VSS

GND

Chip ground

6

VDD5V

PWR

Chip power VDD, 5.0V

7

VDDA

BYPASS Analog voltage reference

8

D+

I/O

USB D+

9

D-

I/O

USB D-

10

BR

IN

Button right key input, normal pull-high (50k), press connect to low

11

BM

IN

Button middle key input, normal pull-high (50k), press connect to low

12

Z2

IN

Z axis, support mechanical scroller input

13

Z1

IN

Z axis, support mechanical scroller input

14

OSCOUT

OUT

Oscillator output, connected to resonator

1.2 Pin Assignment

LB

RB

+ X

+ Y

1

2

3

4

5

6

9

10

11

12

13

14

1

8

7

14

8

7

Figure 1. Top View Pinout

Figure 2. Top View of Mouse

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PixArt Imaging Inc.

V0.2 Dec. 2006