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ADNS-3530 Datasheet(PDF) 15 Page - Pixart Imaging Inc.

Part No. ADNS-3530
Description  Low Power LED Integrated Slim Mouse Sensor
Download  25 Pages
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Maker  PIXART [Pixart Imaging Inc.]
Homepage  http://www.pixart.com.tw

ADNS-3530 Datasheet(HTML) 15 Page - Pixart Imaging Inc.

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Notes on Shutdown and Forced Rest
The ADNS-3530 can be set in Rest mode through the
Configuration_Bits register (0x11). This is to allow for
further power savings in applications where the sensor
does not need to operate all the time.
The ADNS-3530 can be set in Shutdown mode by as-
serting the SHTDWN pin. For proper operation, SHTD-
WN pulse width must be at least tSHTDWN. Shorter pulse
widths may cause the chip to enter an undefined state.
In addition, the SPI port should not be accessed when
SHTDWN is asserted. (Other ICs on the same SPI bus can
be accessed, as long as the sensor’s NCS pin is not as-
serted.) The table below shows the state of various pins
during shutdown. After deasserting SHTDWN, a full reset
must be initiated. Wait tWAKEUP before accessing the SPI
port, then write 0x5A to the POWER_UP_RESET register.
Any register settings must then be reloaded.
SHTDWN active
Low Current
*NCS pin must be held to 1 (high) if SPI bus is shared with other de-
vices. It can be in either state if the sensor is the only device in addition
to the microcontroller.
Note: There are long wakeup times from shutdown and forced Rest.
These features should not be used for power management during
normal mouse motion.
PixArt Imaging Inc.
Low Power LED Integrated Slim Mouse Sensor
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw

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