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OM02

Optical Mouse Sensor

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OM02

Optical Sensor

5-4. Timing and state diagrams

5-4-1. Quadrature Output Waveform

The output signals are two channels quadrature (△X and △Y), which emulates encoder

phototransistors. Sensor IC generates △X and △Y relative displacement values that are converted

into two channel quadrature signals. The two channel quadrature outputs are 3.5V signals. The △X

and △Y counts are used to generate the X1, X2 and Y1, Y2 quadrature signals. The quadrature

signals can change at a maximum rate of 25 KHz. The following diagrams show the timing for

positive X motion, to the right direction.

t

t

X1

t

t

t

t

X2

where t = 40us

Example: Quadrature Output Waveform (+X motion)

5-4-2. PD Pin Timing

z Pulse width to initiate the power down mode, tPDW (Power Down Pulse Width) minimum time

is 720μs.

z When the mouse is fully active again, tPUPD (Power Up from PD) maximum time is 300ms.

PD

ID D

tPD

tPDW

tPUPD

PD Timing Normal Mode

This specification may change without further notice.

5

(Revision Date: 2004/2/10)

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