Design notes

VT5363

8/23

2.4

Bill of materials - BOM

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.

Table 2.

Bill of materials: main components

Ref.

Description

Manufacturer

Part number

U1

Optical mouse sensor

STMicroelectronics

VT5363V032

X1

6MHz resonator

Murata

CSTLA6M00G55-B0

D1

Navigation LED

See Chapter 5: LED selection

SW1-4

Switches

Omron

D2F series

SW5

Mechanical encoder (scroll-wheel)

Alps

EC10E series

Q1

NPN bipolar transistor (to drive D1)

Standard component - many suppliers

C1-C4

4u7 tantalum capacitor

Standard component - many suppliers

C5-C7

100nF ceramic capacitor

Standard component - many suppliers

R1

1k5 resistor

Standard component - many suppliers

R4-R10

100k resistors

Standard component - many suppliers

R11

1k resistor

Standard component - many suppliers

Only required if EEPROM is fitted

U2

EEPROM

STMicroelectronics

M24C01W

R13,R14

10k resistors

standard component - many suppliers

Additional items not mounted on the PCB

Optics Assembly

See STV-363-R01 Reference Design Manual

Aperture Stop

See STV-363-R01 Reference Design Manual

USB/PS2 cable

Standard component - many suppliers