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PAW3401DK Datasheet(PDF) 3 Page - Pixart Imaging Inc.

Part # PAW3401DK
Description  PS/2 OPTICAL MOUSE SENSOR
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Manufacturer  PIXART [Pixart Imaging Inc.]
Direct Link  http://www.pixart.com.tw
Logo PIXART - Pixart Imaging Inc.

PAW3401DK Datasheet(HTML) 3 Page - Pixart Imaging Inc.

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PixArt Imaging Inc.
PAW3401
12 PIN PS/2 Optical Mouse Sensor
2. Block Diagram and Operation
Figure 3. Block diagram
The PAW3401 is a CMOS process optical mouse sensor single chip with PS/2 interface that serves as a non-
mechanical motion estimation engine for implementing a computer mouse. It is based on new optical navigation
technology, which measures changes in position by optically acquiring sequential surface images (frames) and
mathematically determining the direction and magnitude of movement. The sensor is in a 12-pin optical package
and comes with the resolution of 400/800/1000 counts per inch (CPI) and the rate of motion up to 28 inches per
second. It is also featured crystal-less (Internal ± 10% accurate oscillator) to save customer’s BOM cost. The
PAW3401 includes PS/2 interface so that no mouse controller is needed to interface through PS/2. The
PAW3401 can receive command and echo status or data format which are compatible with IBM PS/2 mouse and
Microsoft 3D PS/2 mouse.
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
V1.1, Dec. 2006
.
3


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