STMICROELECTRONICS VT5365V032

VT5365
Single-chip optical mouse sensor for wireless applications
Data Brief
Features
Applications
■
One chip solution with internal micro and
minimal external circuitry
■
■
1.8V (single battery) or 2.0 V to 3.2 V (serial
batteries) supply operation
Technical specifications
■
Very low power operation, enabling long
battery life
Wireless optical mouse for Laptop/Desktop PC
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)
400CPI - 32ips
800CPI - 16ips
1600CPI - 8ips
3200CPI - 4ips
■
800 / 1600 cpi resolution (switchable by
simultaneous button press)
■
Up to 10,000 frames per second
■
Tracking at up to 40 ips
■
Internal 27.045MHz modulator, frequency &
deviation customizable via E2
■
Single 12MHz Crystal design
Clock
12MHz
■
ST 4.8 kbps protocol,
customization available via E2
Supply voltage
1.8V
Supply current(2)
Fast run (10Kfps) - 22mA
Slow run (2.5Kfps) - 12mA
Idle 1 -500µA
Idle 2 - 120µA
Sleep - 70µA
■
254 ID codes
■
Mechanical Z-wheel + 5 buttons
■
Low battery detect and indicator
■
Proven, high volume package technology,
smallest package currently available on market
Operating temperature [0: 60] °C
■
Suitable for use with LED and laser light
sources
Package type
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 40ips.
Description
2. All currents were measured on an ST Reference
Design Mouse supplied with 1.8V at maximum
exposure and include LED and RF stage.
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 whilst enabling excellent
navigation control and precision on a wide range
of surfaces. Housed in the smallest, currently
available, package (7mm x 7mm), 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.
June 2006
7*7mm 32 lead LOQFP
(Low profile Optical Quad
Flat Pack)
Order codes
Part number
VT5365V032
Rev 2
For further information contact your local STMicroelectronics sales office.
Description
Optical mouse sensor
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Description (continued)
VT5365
Description (continued)
The VT5365 has been optimized for low power operation enabling long battery life, achieved
by either a single 1.8V or 2.0 V to 3.2 V supply.
The on-chip regulators allow for a wide range of power supply taken from 2 batteries in
series, enabling a low cost BOM. However, for the most efficient power consumption, the
regulators can be bypassed so that the chip is driven at the minimal supply of 1.8V by an
external power source (typically a DC/DC convertor from a single cell voltage). In both
cases, an on-chip DCDC regulator controls the LED, so that only a single 1.8V supply is
required for the overall application. The supply scheme is selected by connecting an IO to
GND or VDD.
Care has been taken to implement ultra-low power idle/sleep modes with wake-ups at
programmable periods and/or external events enabling very long battery life. It is estimated
that with a typical user and 2 x AA Alkaline batteries configured in parallel a useful battery
lifetime of 9 months can be achieved.
STMicroelectronics default firmware supports 5 buttons, mechanical Z-Wheel, low battery
level detect/indicate output and internal DC/DC controller to supply the navigation LED.
The firmware generates baseband 4.8kbps, Manchester coded data with RF on signal for
standby.
The output can be selected as either baseband RF serial data, or 27.045MHz FSK digitally
modulated signal. In this case, very minimal external circuitry is required for filtering and
amplification, and the overall system can be achieved using a single 12MHz Xtal.
This firmware may be replaced allowing customers to build in their own features for their
particular mouse (including 2 extra GPIO).
The VT5365 sensor will operate over a wide range of illuminant wavelengths and is suitable
for use with visible, IR and laser light sources.
Figure 1.
VT5365 block diagram
Single Cell Voltage
Power
Vdd (1.8V)
Power Management
TRK_LED
LED control
VT5365
Pixel Array
1.8V Single Stage
amplifier
27MHz
passive LC filter
RFOUT
Optional
EEPROM
SDA
SCL
RFON
VLED
SGPIO 1
VGATE
VHIGH
SGPIO 0
X1
PSU
Select
GPIO 0
LO BATT
GPIO1-7
Buttons
Z-wheel
X0
12 MHz
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365 Core
VT5365
Description (continued)
Figure 2.
LQFP32 clear resin body 7.0 x 7.0 x 1.40 footprint 1.0
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Revision history
VT5365
Revision history
Table 1.
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Document revision history
Date
Revision
Changes
27-Feb-2006
1
Initial release.
13-Jun-2006
2
Updated the supply current values in fast run, slow run and sleep.
VT5365
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