ADXL345BCCZ1 datasheet(8/24 Pages) AD

부품명	ADXL345BCCZ1

상세설명	Three-Axis, 짹2/4/8/16g Digital Accelerometer

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ADXL345

Preliminary Technical Data

Rev. PrA | Page 8 of 24

Auto Sleep Mode

Additional power can be saved by having the ADXL345

automatically switch to sleep mode during periods of inactivity.

To enable this feature set the THRESH_INACT register to an

acceleration value that signifies no activity (this value will

depend on the application), set TIME_INACT to an

appropriate inactivity time period (again, this will depend on

the application), and set the AUTO_SLEEP bit and the LINK bit

in the POWER_CTL register. Current consumption at the sub-

8Hz data rates used in this mode is typically 25 µA.

Standby Mode

For even lower power operation Standby Mode can be used. In

Standby Mode current consumption is reduced to 2µA (typical).

In this mode no measurements are made and communication

with the ADXL345 is limited to single-byte read or writes.

Standby Mode is entered by clearing the MEASURE bit (D3) in

the POWER_CTL register. Placing the device into Standby

Mode will preserve the contents of the FIFO.

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