PixArt Imaging Inc.
PAN3501UI
USB Optical Mouse Sensor Single Chip
2. Block Diagram and Operation
LED
LED
DRIVER
Z-AXIS
COUNTER
POWER ON
RESET
VOLTAGE REGULATOR
AND POWER CONTROL
VDD5V
VSS
VSSLED
5V
POWER
WHEEL
Z1
Z2
CMOS IMAGE SENSOR
DEBUNCE
BL
BM
BUTTON
BR
B4
B5
D+
D-
VREFA
VREFB
VDDQ
DIGITAL
SIGNAL
PROCESSOR
VOLTAGE
REFERENCE
USB
INTERFACE
USB MOUSE CONTROLLER
OSCILLATOR
OSCIN
OSCOUT
18MHZ
RESONATOR
Figure 3. Block diagram
PAN3501UI supports X, Y, Z three axes, and L, R, M, B4, B5 five buttons under USB mode. It is a
CMOS process optical mouse sensor single chip with USB interface that serves as a non-mechanical
motion estimation engine for implementing a computer mouse.
PAN3501UI is in a 24-pin optical package and comes with the resolution of 400/600/800 counts per inch
(cpi) and the rate of motion up to 28 inches per second. It include USB interface so that no mouse
controller is needed to interface through USB. PAN3501UI can receive command and echo status or data
format, both complete Universal Serial Bus
®
spec V1.1 and USB HID spec V1.1 compatibility. It is also
a cost effective solution to support USB Mouse.
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.
3
PixArt Imaging Inc.
E-mail:
fae_service@pixart.com.tw
V1.0, APR. 2005
PIXART [ PIXART IMAGING INC. ]
