PixArt Imaging Inc.

PAW3402 / PAW3412

PS/2 Optical Mouse SOC

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PixArt Imaging Inc.

V1.0, Feb. 2008

1. Pin Configuration

1.1 Pin Description

Pin # Name

Type

Definition

1

BL

IN

Button left key input, internal pull-up 50K ohm, press connect to low

2

LED

OUT

LED control

3

OSC_RES

IN

Connect to resistor input

4

VSS

GND

Chip ground

5

VDD5V

PWR

Chip power VDD, 5.0V

6

VREF

BYPASS Analog voltage reference

7

CLOCK

I/O

PS/2 mouse clock line

8

DATA

I/O

PS/2 mouse data line

9

BR

IN

Button right key input, internal pull-up 50K ohm, press connect to low

10

BM

IN

Button middle key input, internal pull-up 50K ohm, press connect to low

11

Z2

IN

Z axis, support mechanical encoder input (internal pull-down 50K ohm) or

optical encoder input (needs external pull-down resistor)

12

Z1

IN

Z axis, support mechanical encoder input (internal pull-down 50K ohm) or

optical encoder input (needs external pull-down resistor)

1.2 Pin Assignment For Sensor Rotate 0˚

Figure 1. Top View Pinout

Figure 2. Top View of Mouse