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VT5363

Single-chip USB/PS2 optical mouse

Features

■

Suitable for use with both LED and laser

(VCSEL) light sources

Single chip design with minimal support

circuitry

USB and PS2 operation

Single +5 V supply

No mechanical moving parts required

800 cpi resolution (400 cpi selectable)

9600 frames per second

Tracking at up to 40 ips

Up to 5 switch inputs and scroll wheel

Possible customizing for VID, PID and

descriptor string with external EEPROM

Proven, high volume package technology

compensates for the change in sensitivity

compared to 640nm (red LED). Motion

performance can be improved by increasing the

current supplied to the navigation LED.

A specifically designed optical system with

integrated light guide and lens is available. This

has been optimized for low cost, space saving

and ease of mouse manufacture. No kapton tape

is required in the assembly process.

Applications

■

Optical USB/PS2 mouse for desktop PC,

workstation and laptop

Technical specifications

Resolution

Pixel size

Array size

Frame rate

High Speed

Motion Detector

Clock

Supply voltage

Supply current

Operating

temperature

Package type

800 CPI (400 selectable)

30.4 µm

20*20 pixels

9600 frames/second

Accurate motion up to 40 ips

6MHz resonator

direct from USB or PS2 port

15mA (typ.)

(excludes LED)

[0: 60] °C

7*7mm 32 lead LOQFP

(1)

Description

The VT5363 optical tracking sensor is a complete

solid state tracking engine with no moving parts.

This single chip optical mouse sensor provides

excellent control and precision and works on a

wide range of surfaces.

The VT5363 supports 2, 3 or 5 button mouse

designs with a mechanical scroll wheel encoder. It

contains a dual USB/PS2 interface with automatic

interface selection and may be powered directly

from the USB or PS2 port. A single 6MHz

resonator provides all the clock requirements and

a minimum of additional passive components are

required.

An external EEPROM may be used to implement

customer specific USB configurations (PID, VID

and descriptor string).

The VT5363 sensor operates over a wide range

of illuminant wavelengths. For devices operating

at approximately 850nm (IR LED or VCSEL), the

on-die automatic exposure controller (AEC)

: Low profile Optical Quad Flat Pack

January 2007 Rev 41/23

ContentsVT5363

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Design notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

2.10

Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Reference schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Bill of materials - BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Scroll wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Driving the navigation LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

LNK_LED output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Optical centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Sensor orientation on PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3Configuring the VT5363 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1

3.2

3.3

3.4

3.5

3.6

Selecting USB or PS2 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Selecting mouse configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Changing the CPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

External EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

EEPROM data format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Application support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4Optics assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Mouse assembly guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5LED selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1

5.2

5.3

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Key LED parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

VCSEL and IR illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2/23

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

VT5363Contents

8Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.1

8.2

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

LOQFP package guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3/23

IntroductionVT5363

1 Introduction

The VT5363 sensor is a single-chip solid state optical tracking engine with no moving parts.

It allows the creation of a high performance, fully featured mouse with the minimum of

external components. The device provides excellent navigation control and precision and

works on a wide range of surfaces.

VT5363 incorporates features that simplify product design and reduce time to market. By

minimizing the number of external components, the mouse manufacturer has flexibility for

layout and product design.

ST has worked with optical component suppliers to produce a single piece light guide with

integrated lens, and recommendations for a compatible LED. Details of the optics and LED

are included in this main functional blocks of the VT5363 are shown in

Figure1.

Figure 5363 block diagram

5V SUPPLY

(USB or PS2)

5V to 3.3V

regulator

3V3 to 1V8A

regulator

3V3 to 1V8D

regulator

VT5363

AVDD

Pixel Array

DVDD

Z-wheel

USB/PS2

interface

Controller

PULLUP

switches

DN / DATA

DP / CLOCK

6 MHz resonator

LED control

OPTIONAL

EEPROM

SCL

SDA

Optional

LNK_LED

TRK_LED

4/23

VT5363Design notes

2 Design notes

2.1 Pin assignment

Figure 5363 pin assignment

VREG33

VDD5

DVDD

3130

2827

SCL

SDA

DGND

DVDD

TRK_LED

LNK_LED

VT5363

1415

5/23

Design notesVT5363

2.2 Pin description

Table 1.

Pin N°

VT5363 pin description

Pin name

VREG33

VDD5

DVDD

DGND

PULLUP

DN / DAT

DP/ CLK

VDD3

DVREG18

AVREG18

LNK_LED

TRK_LED

DVDD

DGND

SDA

SCL

SWFOR

SWBACK

SWMID

SWLEFT

SWRIGHT

RESERVED

AVDD

AGND

Type

PWR

OSC

PWR

I/O

PWR

I/O

PWR

3.3 V regulator output

5V supply - direct from USB or PS2 supply

6MHz resonator

1.8V digital supply

Digital ground

connect 1K5 resistor from here to DN/DAT

DN in USB mode, DATA in PS2 mode

DP in USB mode, CLOCK in PS2 mode

3.3V supply

1.8V digital regulator output - use to drive DVDD

1.8V analogue regulator output - use to drive AVDD

Status LED output

Navigation LED output

1.8V digital supply

Digital ground

I2C SDA line

I2C SCL line

Z-wheel input A

Z-wheel input B

‘Forward’ switch input (active low)

‘Back’ switch input (active low)

‘Middle’ switch input (active low)

‘Left’ switch input (active low)

‘Right’ switch input (active low)

Connect to GROUND

1.8 V analogue supply

Analogue ground

Comment

Note:All other pins are NOT CONNECTED

6/23

VT5363Design notes

2.3 Reference schematic

Figure 5363 reference schematic

7/23

Design notesVT5363

2.4 Bill of materials - BOM

Table 2.

Ref.

SW1-4

SW5

C1-C4

C5-C7

R4-R10

R11

Bill of materials: main components

Description

Optical mouse sensor

6MHz resonator

Navigation LED

Switches

Mechanical encoder (scroll-wheel)

NPN bipolar transistor (to drive D1)

4u7 tantalum capacitor

100nF ceramic capacitor

1k5 resistor

100k resistors

1k resistor

Manufacturer

STMicroelectronics

Murata

Part number

VT5363V032

CSTLA6M00G55-B0

See Chapter5: LED selection

Omron

Alps

D2F series

EC10E series

Standard component - many suppliers

Only required if EEPROM is fitted

R13,R14

EEPROM STMicroelectronics

10k resistors

M24C01W

standard component - many suppliers

Additional items not mounted on the PCB

Optics Assembly

Aperture Stop

USB/PS2 cable

See STV-363-R01 Reference Design Manual

Standard component - many suppliers

2.5 Switches

The VT5363 supports up to 5 switch inputs. These switches provide the standard mouse

functions of LEFT, RIGHT and MIDDLE as well as the advanced functions of BACK and

FORWARD. The switch inputs are all active LOW. An external pull-up resistor is required

between the switch input and the 3V3 supply.

2.6 Scroll wheel

The VT5363 supports the use of an external mechanical shaft encoder with quadrature

outputs to act as a scroll wheel. The EC10E series from Alps are suitable. Pull-up resistors

are required between the ZA and ZB outputs of the shaft encoder and the 3V3 supply. Note

that the two quadrature outputs ZA and ZB are not interchangeable and must be connected

correctly.

8/23

VT5363Design notes

2.7 Driving the navigation LED

The VT5363 provides an output (NAV_LED) for driving the LED used to illuminate the

mousing surface. This output is active HIGH but cannot be used to drive the navigation LED

directly. An external NPN bipolar transistor is recommended as shown in the reference

schematic. The maximum current through the LED is controlled by a resistor (R1 on the

Reference Schematic).

2.8 LNK_LED output

The VT5363 has an output (LNK_LED) which is high whenever the mouse is active (i.e.

connected to a PC which is not in a suspend state).

The user does not need to use this output to produce a working mouse but it may be used to

drive an additional LED for cosmetic purposes. An external bipolar transistor is required in

the same way as the navigation LED.

2.9 Optical centre

The optical centre of the VT5363 is NOT in the centre of the package, it is offset by -

0.243mm in the X-axis and 0.215mm in the Y axis with respect to the centre of the package

as shown below. The PCB designer must take this into account when laying out the PCB.

Figure 5363 optical centre

Optical centre (-0.243mm, +0.215mm)

pin 1 marking

mechanical centre

of package (0,0)

TOP VIEW OF VT5363

9/23

Design notesVT5363

2.10 Sensor orientation on PCB

The VT5363 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 Figure5.

Figure 5363 orientation

pin 1 marking

LEFT

RIGHT

TOP VIEW of PCB

DOWN

VT5363 mounted UNDERNEATH

10/23

VT5363Configuring the VT5363

3.1

Configuring the VT5363

Selecting USB or PS2 operation

The selection of USB or PS2 interface is performed [automatically] by the VT5363 including

a USB pull-up resistor connected between Pin No. 10 and the DN/DAT line.

3.2 Selecting mouse configuration

The VT5363 may be configured to be one of three different types of mouse.

●

2 button mouse

3 button mouse with scroll wheel

5 button mouse with scroll wheel

The configuration is achieved by connecting the unused switch inputs to the LNK_LED

output (pin 17). All configurations will report a USB Vendor Identity (VID) of 0x0553 (ST

Microelectronics Imaging Division). The three different configurations will result in 3 different

USB Product Identities (PIDs) and descriptor strings as described in Table3.

Table 3.

Mode

2 button

Configuration selection

Inputs tied to

LNK_LED

SWBACK,

SWFOR, SWMID

VID

0x0553

PID

0x0A00

0x0A01

0x0A02

USB descriptor string

‘2 button optical mouse’

‘3 button optical mouse with scroll

wheel’

‘5 button optical mouse with scroll

wheel’

3 button + ZSWBACK, SWFOR

5 button + Znone

A user who wishes to use their own PID, VID and descriptor string may use an external

serial EEPROM to hold this information.

3.3 Changing the CPI

The default CPI ‘Counts Per Inch’ of the VT5363 is 800CPI, this can easily be toggled

between 800/400CPI by the user, by simply holding down the left and right buttons till

LNK_LED goes off. If the PC is shutdown or the mouse unplugged it will return to the default

(800 CPI).

3.4 External EEPROM

The VT5363 supports the use of an external 128 byte serial EEPROM for holding customer

specific information. EEPROM such as the M24C01W from STMicroelectronics are suitable.

The EEPROM must be connected to the SDA and SCL pins of the VT5363. If no EEPROM

is used then these lines should be tied to EEPROM cannot be programmed by

the VT5363 itself and must be pre-programmed before being fitted to the final PCB.

11/23

Configuring the VT5363VT5363

3.5 EEPROM data format

A 128 byte serial EEPROM is used to hold USB configuration information. The lower 64

bytes hold USB PID, VID and string information as shown in the table below. The upper

bytes may be used to hold special setup information, for example to set the resolution to

400cpi (contact STMicroelectronics for details).

Location 127 in the EEPROM must hold the number 0xAA and is used to detect that an

EEPROM has been fitted. If location 127 does not contain 0xAA the EEPROM contents will

be ignored.

Table 4.

EEPROM

Location

19 - 62

64-126

Example EEPROM contents

Contains

VID (LSB)

VID (MSB)

PID (LSB)

PID (MSB)

PID (LSB)

PID (MSB)

PID (LSB)

PID (MSB)

0x04

0x03

0x09

0x04

0x0C

0x03

0x4D

0x4F

0x55

0x53

0x45

0xFF

Language ID Length

Language ID Type

Language ID (2 bytes)

(0x0904 = US English)

String ID Length = (number of characters in string *2) + 2

For the example string ‘MOUSE’ this is (2*5)+2 = 12 = 0x0C

String ID Type

ASCII code for first character of String (example for ‘M’)

ASCII code for first character of String (example for ‘O’)

ASCII code for first character of String (example for ‘U’)

ASCII code for first character of String (example for ‘S’)

ASCII code for first character of String (example for ‘E’)

Rest of lower half of EEPROM is available for longer strings, up

to 50 characters maximum (set unused locations to 0xFF)

Leave upper half of EEPROM empty

(may be used to hold special setup information - contact

STMicroelectronics for details)

Product ID for ‘5 button + Z’ mouse

Product ID for ‘3 button + Z’ mouse

Vendor ID

(only one VID is stored for all 3 mouse configurations)

Product ID for 2 button mouse

Notes

1270xAASpecial flag to indicate that EEPROM is present

12/23

VT5363Configuring the VT5363

3.6 Application support

The user manual for the STV-363-R01 reference design board includes additional

information and application support.

Figure -363-R01 - USB/PS2 mouse reference design board

13/23

Optics assemblyVT5363

4 Optics assembly

The optics assembly is shown in Figure7 and Figure8.

Figure l optics

14/23

VT5363

Figure 8.

2D assembly drawing of VT5363 (exploded view)

Optics assembly

15/23

Optics assemblyVT5363

Mouse assembly guidelines

Attach the sensor and all other electrical components onto PCB with the exception of

the navigation LED.

Form the LED leads and insert the LED into the optical assembly.

Fit the optics with aperture to the PCB using the guideposts and feed the navigation

LED leads through their openings. Take care to keep contamination off the sensor

surface. The aperture should self-align to the VT5363 package.

Route the USB/PS2 lead through the base plate then fit the base plate.

Solder the navigation LED leads and trim.

Add mouse top case and feet.

Note:For more details on the optics (including manufacturers), please refer to the STV-363-R01

user manual.

16/23

VT5363LED selection

5 LED selection

5.1 Overview

There are a number of LEDs from a range of suppliers which will work well with the VT5363.

It is the responsibility of the customer to ensure that the chosen LED works in their specific

implementation. There are various price/performance trade-offs which may be made if the

customer chooses to do so.

5.2 Key LED parameters

The VT5363 system requires a bright visible RED LED in a standard 5mm (T1 3/4) package.

The ideal viewing angle is 20

and the intensity should be at least 900mcd at a forward

current of 20mA. The key LED parameters are listed in Table5.

Table 5.

Key LED parameters

ParameterRecommended Value

5mm

8.6mm

AlInGaP

900mcd

+/- 2

Notes

Important for fit with lens

For long-term reliability

Minimum value

Half intensity

Accuracy of the die positioning

within the LED body

Diameter

Length

Material

Luminous Intensity (@20mA)

Viewing Angle

Mechanical accuracy

Color Red

Wavelength

Relative illumination at sensor

plane for a circle of 1.1 mm

diameter

640nm +/- 50nm

80%Illumination value required for

Red/IR LED and VCSEL

5.3 VCSEL and IR illumination

The VT5363 sensor will operate over a wide range of illuminant wavelengths. For devices

operating at approximately 850nm (IR LED or VCSEL), the on-die automatic exposure

controller (AEC) will compensate for the change in sensitivity compared to 640nm (red

LED). Navigation performance may be improved by increasing the illuminated device drive.

approx.

17/23

Electrical characteristicsVT5363

6 Electrical characteristics

Table 6.

Symbol

Vin

Typical operating conditions

Parameter

Supply voltage

Supply current (active)

Supply current (suspend)

Min.

4.1

Typ.

Max.

5.6

23.3

100

Unit

µA

18/23

VT5363Typical performance characteristics

7 Typical performance characteristics

Figure9 shows the typical performance of the VT5363 sensor.

Figure l resolution versus height

Typical Resolution vs Z Height

500.00

450.00

400.00

350.00

300.00

250.00

-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.00

Z Height distance from nominal (mm)

White Card

Black Matt

US Manila

Note:Z = distance from lens to surface

19/23

Package informationVT5363

8 Package information

8.1 Package mechanical data

Figure 32 clear resin body 7.0 x 7.0 x 1.40 foot print 1.0

20/23

VT5363

Table 7.

Package information

LQFP dimensions (mm)

Min. (mm)Typ. (mm)Max. (mm)

1.600

0.050

1.350

0.300

0.090

9.00

7.000

5.600

0.800

9.000

7.000

5.600

0.4500.600

1.000

0d3.5d

5.000

W20.065

0.750

1.400

0.370

0.15

1.450

0.450

0.200

Reference

Note:1

Surface finish W1 is 0.07 Ra.

Ejectors are on 5.2 mm square for both top and bottom package.

On top package, only the identification for pin one is not an engraved ejector.

8.2 LOQFP package guidelines

The IC can be exposed a maximum of 2 times to an IR/Convection reflow solder process

having a temperature profile peak of no higher than 240°C.

The package/chip are lead free and is ROHS compliant.

21/23

Ordering informationVT5363

9 Ordering information

Table 8: Order codes

Part Number

VT5363V032

Description

USB/PS2 optical mouse sensor

10 Revision history

Table 9.

Date

13-Feb-2006

18-Apr-2006

Document revision history

Revision

Initial release.

Updates in the document format. No changes in the content.

Added suitability for use with both LED and laser light sources on

cover page (features and description).

Changes

19-Dec-20063

Section5.2: Key LED parameters - Added ‘Relative illumination’

parameter in Table5: Key LED parameters.

Replaced Figure7: MaxEmil optics.

Move the order codes to Chapter9.

24-Jan-20074Changed the document status to datasheet.

22/23

VT5363

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