STV-376-E01 STMICROELECTRONICS [STMicroelectronics], STV-376-E01 Datasheet
STV-376-E01
Related parts for STV-376-E01
STV-376-E01 Summary of contents
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Ultra-low power laser motion sensor for laser mouse applications Features ■ Ultra-low power performance and high speed/high accuracy motion detection (1 m/ ■ Optional on-chip power management scheme (RUN/IDLE1/IDLE2/SLEEP) ■ On-chip boost-converter controller enables a complete autonomous single ...
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Contents Contents 1 Motion performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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VT5376 7.5 Image streaming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Motion performance 1 Motion performance The sensor can operate with a VCSEL or LED (visible and IR), and when bundled with the appropriate optics subsystem is able to track motion on a wide range of surfaces up to speeds of ...
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VT5376 1.2.2 Automatic power management via internal timer In this mode, after having written the initialization I2C command, the POWERDOWN pin must be left high at all times. In running mode the motion engine operation is basically the same as ...
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Motion performance which is exactly the same as the IDLE modes except that the system wakes up only every 500 ms to check motion activity. 6/30 VT5376 ...
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VT5376 2 Power supply options and power consumption The sensor includes a DCDC controller to supply the laser / LED. This allows the overall sensor system to operate from a single AA or AAA battery supply voltage (from 1.6V down ...
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Electrical characteristics 3 Electrical characteristics 3.1 Supply voltages (using internal DC/DC controller) Table 4. Supply voltages using DC/DC controller Symbol VTOP Boosted supply VBAT Supply from single AA cell 1. Value defined by resistors ratio 3.2 Supply voltages (direct drive, ...
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VT5376 4 Interface The interface is 400 kHz I2C, with very fast polling rate for high CPI applications (down period). 4.1 Protocol Figure 3. Serial interface data transfer protocol Start condition SDA SCL S 4.2 Data format ...
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Interface 4.3 Message interpretation All serial interface communications with the sensor must begin with a start condition. If the start condition is followed by a valid address byte then further communications can take place. The sensor will acknowledge the receipt ...
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VT5376 Figure 6. Single read mentioned in the previous example, the read message is terminated with a negative acknowledge (A) from the master. Multiple location write It is possible to write data bytes to consecutive adjacent internal ...
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I2C control register map 5 I2C control register map Table 7. I2C control register map Address Bits Name 0x00 [7:0] Device Hardware revision 0x01 [7:0] Device Soft revision [0] Automatic Power management [1] Laser Selected 0x05 [2] Use External Supply ...
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VT5376 Table 7. I2C control register map (continued) Address Bits Name [7] Force Laser Out ON 0x0A [6:0] DAC current setting [0] Laser Drive Enable [1] Laser NEN Out [2] Laser NEN OD Enable [3] Force Laser Out High 0x0B ...
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I2C control register map Table 7. I2C control register map (continued) Address Bits Name [5] Rbin Low 0x0C [6] Laser Low [7] Laser High [7] Force Laser Out ON (Compl) 0x0D [6:0] DAC current setting (Compl) 0x21 [7:0] X_motion 0x22 ...
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VT5376 Table 7. I2C control register map (continued) Address Bits Name [0] Invert X [1] Invert Y [3] Swap XY [5] Test Pattern Enabled 0x27 [7] Test Pattern Speed 0x29 [7:0] Min_features[13:6] 0x2A [7:0] Scaling for X motion vectors 0x2B ...
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I2C control register map Table 7. I2C control register map (continued) Address Bits Name 0x61 [7:0] IMAGE[7:0] [0] Frame dump mode enable [1] Frame dump start [2] Frame ready for download 0x62 [3] Frame upload complete [4] PCI Test enable ...
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VT5376 6 Laser 6.1 Direct laser drive and calibration The sensor includes a 7-bit DAC and an output current source. The DAC value must be set via two I2C commands after power-up (default is MIN = 3.4mA, with Rbin = ...
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Laser 6.2 Laser or led system managed by host (external micro) The host must first select LED or LASER (bit [1] of register 0x05). ● LED The host must select if the LED driven by the internal ...
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VT5376 7 General features 7.1 Device clocking The device integrates its own oscillator. It does not require an external Xtal or resonator, instead it requires only an external capacitor of 33 pF. The accuracy of this cap will determine the ...
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General features Figure 10. Frame dump mode timing diagram set by user frame_dump_en frame_dump_ready frame_dump_pixel frame_dump_completed NORMAL MODE 7.5 Image streaming To enter this test mode, set bit 4 of registry 0x62 to 1 (PCI_test_enable). In this mode, the pins ...
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VT5376 Figure 11. Image streaming timing diagram Motion (48MHz QCLK) Laser_NEN (FST) VGate_On (NIB_EVEN) Reset_Out (NIB_ODD) reconstructed pixel data 7.6 Optical centre The optical centre of the VT5376 is NOT in the centre of the package offset by ...
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General features 7.7 Sensor orientation on PCB (with lens) The VT5376 must be orientated correctly on the PCB in order to move the cursor in the correct directions when the mouse is moved. This is shown in Figure 13. VT5376 ...
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VT5376 8 Typical application Figure 14. Very low power and low cost wireless laser application 1.8V AVSS 1 AVDD VGATE_ON VREF VBAT VGATE_START VTOP LASER_OUT RBIN 1 AA LASER_NEN PDN* = POWER_DOWN VTOP (>=2.2V) 1.8V SDA SCL MOTION VT5376 RC_OSC ...
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Typical application 8.1 Overall 2.4 GHz mouse power consumption example Assumptions ● VCSEL, MCU and 2.4 GHz Tx operate from 2.2 V ● MCU consumes running mode and standby mode motion period, ...
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VT5376 9 Pinout Figure 15. Pinout 1 AVDD VGATE_ON VREF VBAT VGATE_START LASER_OUT RBIN LASER_NEN AVSS VT5376 Pinout SDA SCL MOTION RC_OSC DVSS2 DVDD2 RESET_OUT 25/30 ...
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Pinout 9.1 Pin description Table 9. VT5376 pin description Pin Pin name 1 AVDD 2 VGATE_ON 3 VREF 4 VBAT 5 VGATE_START 6 LASER_OUT 7 RBIN 8 LASER_NEN 17 RESET_OUT 18 DVDD2 19 DVSS2 20 RC_OSC 21 MOTION 22 SCL ...
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VT5376 10 Package mechanical data Figure 16. TQFP32 clear resin body 7.0 x 7.0 x 1.40 footprint 1.0 Package mechanical data 27/30 ...
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Package mechanical data Table 10. TQFP dimensions (mm) Reference Note: 1 Surface finish W1 is 0.07 Ra. 2 Ejectors are on 5.2 mm ...
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... VT5376 11 Ordering information Table 11. Ordering information Order code VT5376V032 Table 12. Evaluation boards ordering information Order code STV-376-E01 STV-376-E02 STV-376-E03 12 Revision history Table 13. Document revision history Date 27-Sep-2007 09-Sep-2008 Package TQFP32 OPTO 1.4 mm USB2 VT5376 high-speed imaging system evaluation board ...
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Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...