VT5365_07 Datasheet, PDF (1/26 Pages) STMicroelectronics – Single chip optical/laser mouse sensor for wireless applications

VT5365
Single chip optical/laser mouse sensor for wireless applications
Features
■ One chip solution with internal microprocessor
and minimal external circuitry
■ 1.8 V (single battery) or 2.0 V to 3.2 V (serial
batteries) supply operation
■ Very low power operation, enabling long
battery life
■ 800 / 1600 CPI resolution (switchable by
simultaneous button press)
■ Up to 10,000 frames per second
■ Tracking at up to 40 ips
■ Internal 27.045 MHz modulator available
■ Single 12 MHz crystal design
■ ST 4.8 kbps protocol
■ 254 ID codes
■ Mechanical Z-wheel + 5 buttons
■ Low battery detect and indicator
■ ID update & E2 store at every CONNECT press
■ Firmware customization available on request
■ Proven, high volume package technology,
smallest package currently available on market
■ Suitable for use with LED and laser light
sources
■ Reference designs available
Applications
■ Wireless optical mouse for Laptop/Desktop PC
Description
The VT5365 is the first generally available
complete system on-chip for use in wireless
optical mice. The device has been designed to
provide long battery life while enabling excellent
navigation control and precision on a wide range
of surfaces. Housed in the smallest currently
available package (7 mm x 7 mm), the chip is
suitable for use in small form-factor mice
demanded by laptop users. Minimal external
circuitry is required, thereby reducing BOM and
assembly costs.
Table 1. Technical specifications
Resolution
800 (default) / 1600 CPI
Pixel size
30.4 µm
Array size
20*20 pixels
Frame rate
Up to 10,000 frames/second
High speed motion
detector⁽¹⁾
400 CPI - 32 ips
800 CPI - 16 ips
1600 CPI - 8 ips
3200 CPI - 4 ips
Clock
12 MHz
Supply voltage
1.8 V
Supply current⁽²⁾
Fast RUN (10 Kfps) - 28 mA
Slow RUN (2.5 Kfps) - 16 mA
IDLE 1 - 500 µA
IDLE 2 - 120 µA
SLEEP - 60 µA
Operating temperature [0 - 60] ° C
Package type
7*7 mm 32 lead LOQFP
(Low profile Optical Quad
Flat Pack)
1. Speed limitation is due to RF protocol, which is also in
line with the USB Low Speed Device. The VT5365
motion detector can handle up to 40 ips.
2. All currents were measured on an ST Reference
Design Mouse supplied with 1.8 V at maximum
exposure and include an IR LED and RF stage.
March 2007
Rev 1
1/26
www.st.com
26