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VT5376V032 Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte VT5376V032
Spiegazioni elettronici  Ultra-low power laser motion sensor for laser mouse applications
PDF  30 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VT5376V032 Scheda tecnica(HTML) 2 Page - STMicroelectronics

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Contents
VT5376
2/30
Contents
1
Motion performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1
Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2
Battery life management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1
Manual power management via POWERDOWN pin . . . . . . . . . . . . . . . . 4
1.2.2
Automatic power management via internal timer . . . . . . . . . . . . . . . . . . . 5
2
Power supply options and power consumption . . . . . . . . . . . . . . . . . . . 7
2.1
Low cost application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
External supply application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1
Supply voltages (using internal DC/DC controller) . . . . . . . . . . . . . . . . . . . 8
3.2
Supply voltages (direct drive, bypassing DC/DC controller) . . . . . . . . . . . . 8
3.3
Logic IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1
Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2
Data format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3
Message interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.4
Type of messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5
I2C control register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6
Laser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1
Direct laser drive and calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2
Laser or led system managed by host (external micro) . . . . . . . . . . . . . . 18
6.3
Laser fault detection and safety feature . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7
General features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1
Device clocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2
Battery level monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.3
Resolution setting (counts/inch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.4
Image (frame) capture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19



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