PixArt Imaging Inc.
PAW3504
Pure USB Optical Mouse Sensor Single Chip
2. Block Diagram and Operation
POWER ON
RESET
VOLTAGE REGULATOR
AND POWER CONTROL
VDD5V
VSS
5V
POWER
LED
LED
DRIVE
CMOS
IMAGE
SENSOR
Z1
WHEEL
Z2
Z-AXIS
COUNTER
DIGITAL
SIGNAL
PROCESSOR
VDDA
VDDQ
VOLTAGE
REFERENCE
BL
BUTTON
BM
BR
USB
INTERFACE
D+
D-
DEBOUNCE
OSCIN
OSCILLATOR
USB MOUSE CONTROLLER
OSCOUT
24 MHZ
RESONATOR
Figure 3. Block Diagram
The PAW3504 supports X, Y, Z three axes, and L, R, M three 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.
The PAW3504 is in a 14-pin optical package and comes with the resolution of 800 counts per inch (CPI) and the
rate of motion up to 28 inches per second. It includes USB interface so that no mouse controller is needed to
interface through USB. The PAW3504 can receive command and echo status or data format, both complete
Universal Serial Bus
®
spec V1.1 and USB HID spec V1.11 compatibility. It is also a cost effective solution to
support USB Mouse.
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3
V1.0 June. 2008
PixArt Imaging Inc.
E-mail:
fae_service@pixart.com.tw
PIXART [ PIXART IMAGING INC. ]
