pan3401 ETC-unknow, pan3401 Datasheet - Page 3

• Manufacturer Part Number: pan3401
• Description: Ps/2 Optical Mouse Single Chip
• Manufacturer: ETC-unknow

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PixArt Imaging Inc.
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PixArt Imaging Inc.
PAN3401
2. Block Diagram and Operation
The PAN3401 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
PAN3401 includes PS/2 interface so that no mouse controller is needed to interface through PS/2. The PAN3401
can receive command and echo status or data format which are compatible with IBM
Microsoft
INTERFACE
PS/2
BUTTON
WHEEL
[e-mail]
®
3D PS/2 mouse.
CLOCK
DATA
BM
BL
BR
LED
Z1
Z2
DRIVE
LED
PS/2 MOUSE CONTROLLER
Figure 3. Block Diagram
CMOS IMAGE
PROCESSOR
POWER ON
DIGITAL
SIGNAL
SENSOR
RESET
OSCILLATOR
INTERNAL
PS/2 Optical Mouse Single Chip
VREF
OSC_RES
VDD
VSS
®
PS/2 mouse and
.
V1.3, Mar. 2008
5V POWER
VOLTAGE
REFERENCE
3