AN2847 datasheet(16/31 Pages) STMICROELECTRONICS

Part #	AN2847

Description	This document provides application information for the low-voltage 3-axis digital output

PDF	31 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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16 / 31 page

Operating modes

AN2847

16/31

Doc ID 15136 Rev 2

Figure 4.

Sleep to wake mode

3.4.1

Entering the sleep to wake mode

Perform the following procedure to set up the Sleep to Wake function:

Configure the desired interrupt event (Free-fall, Wake-up, 6D position or 6D

movement).

Select the desired low power mode (ODRLP) and Data Rate (ODR) in CTRL_REG1.

Enable the sleep to wake mode through CTRL_REG5 (TurnOn1 = TurnOn0 = 1).

Once an interrupt event occurs, the TurnOn bits change to TurnOn1 = 0 and TurnOn0 = 1

and the system generates data at ODR. The user can re-activate the Sleep to Wake function

by executing step 3 again.

3.4.2

Exiting the sleep to wake mode

To return to normal mode or to Low Power mode, the user must disable the sleep to wake

function by setting TurnOn1 = TurnOn0 = 0.

AN2847 Datasheet(PDF) 16 Page - STMicroelectronics