VT5365_07 STMICROELECTRONICS [STMicroelectronics], VT5365_07 Datasheet
VT5365_07
Related parts for VT5365_07
VT5365_07 Summary of contents
Page 1
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 3.2 V (serial batteries) supply operation ■ Very low power operation, ...
Page 2
Contents Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
VT5365 4.5 RF channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4
Introduction 1 Introduction The VT5365 sensor is a single-chip solid state optical tracking engine with no moving parts. It allows the creation of a high performance, fully featured wireless mouse with the minimum of external components. The device, which provides ...
Page 5
VT5365 Care has been taken to implement ultra-low power idle/sleep modes with wakeups at programmable periods and/or via external events, enabling very long battery life estimated that with a typical user and two AA Alkaline batteries configured in ...
Page 6
Design notes 2 Design notes 2.1 Pin assignment Figure 3. VT5365 pin assignment AVSS ADC_IN 3 VHIGH DVSS2 7 DVDD2 8 6/ VT5365 ...
Page 7
VT5365 2.2 Pin description Table 2. VT5365 pin description Pin No. 1 AVSS 3 ADC_IN 4 VHIGH DVSS2 8 DVDD2 9 RC_TIMER 10 SGPIO1 11 SGPIO0 12 GPIO7 13 GPIO6 14 GPIO5 15 GPIO4 16 ...
Page 8
Design notes 2.3 Reference design schematic Figure 4. VT5365 reference schematic - batteries in series 8/26 VT5365 ...
Page 9
VT5365 2.4 Reference design - bill of materials Table 3. Bill of materials: main components Ref. U1 Optical mouse sensor Q1 BSS138 N-channel MOSFET, SOT23 Farnell Q2 NPN transistor to drive D1 SMD power Schottky diode, D2 STPS340U SMB 15 ...
Page 10
Design notes 2.5 Optical center The optical center of the VT5365 is NOT in the centre of the package offset by -0.243 mm in the X-axis and 0.215 mm in the Y axis with respect to the centre ...
Page 11
VT5365 2.7 Driving the navigation LED The VT5365 provides an output (NAV_LED) to drive the LED that is used to illuminate the mousing surface. This output is active HIGH but cannot be used to drive the navigation LED directly. An ...
Page 12
ST default firmware 3 ST default firmware 3.1 Switches (GPIO The VT5365 supports switch inputs with the default firmware. These switches provide the standard mouse functions of LEFT, RIGHT and MIDDLE as well as ...
Page 13
VT5365 3.5 SGPIO 1 - VGate If required, (that is, if VLED > 1.8 V) SGPIO 1 can be used as a DCDC Controller output to supply VLED. For more details please refer to STV-365-R0X user manuals. 3.6 CPI swap ...
Page 14
ST default firmware 3.9.1 Power management scheme Figure 7. Power management modes No motion and/or GPIO activity for 200 ms IDLE 1 MODE: System wakes for 1 frame every check for motion After 25 secs of IDLE ...
Page 15
VT5365 3.10 Overall system performance The overall performance of a wireless mouse system depends on many different factors including: ● Battery choice ● Power supply design ● Design of external RF transmission circuitry ● User model (that is, how much ...
Page 16
Customizable firmware 4 Customizable firmware The VT5365 features 4 kBytes of code space that is held in RAM. The RAM can be uploaded at power-up from an external EEPROM (via the on-chip I2C master module) which can be programmed with ...
Page 17
VT5365 4.5 RF channels The chip features a digital programmable frequency synthesizer using a 108 MHz clock as an input, creating fractionally divided signals with frequencies around 27 MHz. The different frequencies available are listed below: ● 26.995 ...
Page 18
Optics assembly 5 Optics assembly 5.1 Drawings The optics assembly is shown in Figure 8. MaxEmil optics 18/26 Figure 8 and Figure 9. VT5365 ...
Page 19
VT5365 Figure 9. 2D assembly drawing of the VT5365 (exploded view) ) Optics assembly 19/26 ...
Page 20
Optics assembly 5.2 Mouse assembly guidelines 1. Attach the sensor and all other electrical components onto the PCB, with the exception of the navigation LED. 2. Form the LED leads and insert the LED into the optical assembly. 3. Fit ...
Page 21
VT5365 6 LED selection 6.1 Overview There are a number of LEDs from a range of suppliers which will work well with the VT5365 the responsibility of the customer to ensure that the chosen LED works in their ...
Page 22
Electrical characteristics 7 Electrical characteristics 7.1 Typical operating conditions Table 5. Operating conditions Symbol Vin Supply voltage Vtop Supply Voltage Supply current (Fast RUN mode - 10 Kfps) Supply current (Slow RUN mode - 2.5 Kfps) Supply current (IDLE 1 ...
Page 23
VT5365 8 Package mechanical data Figure 10. LQFP32 clear resin body 7.0 x 7.0 x 1.40 foot print 1.0 Package mechanical data 23/26 ...
Page 24
Package mechanical data Table 7. LQFP dimensions (mm) Reference Note: 1 Surface finish W1 is 0.07 Ra. 2 Ejectors are on 5.2 mm ...
Page 25
VT5365 9 Ordering information Table 8. Order Codes Part number VT5365V032 10 Revision history Table 9. Document revision history Date 14-Mar-2007 Optical mouse sensor Revision 1 Initial release. Ordering information Description Changes 25/26 ...
Page 26
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 ...