AN2847 datasheet(13/31 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]

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13 / 31 page

AN2847

Operating modes

Doc ID 15136 Rev 2

13/31

Operating modes

The LIS331DLH can operate in the following four modes, which can be selected through the

configuration of CTR_REG1 and CTRL_REG5:

●

Normal mode

●

Power down

●

Low power

●

Sleep to wake

With reference to the datasheet of the device, the PowerMode (PM) and DataRate (DR) bits

of CTRL_REG1 register are used to select the basic operating modes (Power Down, Normal

mode and Low Power). The TurnOn bits of the CTRL_REG5 register are used to enable

Sleep to Wake, which is an advanced mode involving the interrupt configuration also.

Note:

The PMx bits are disabled if the TurnOnx bits of the CTRL_REG5 are not configured as

zeros.

Table 6.

Power mode and low-power output data rate configurations

PM2

PM1

PM0

Power mode selection

Output data rate [Hz]

ODRLP

Power Down

Normal mode

ODR

Low Power

0.5

Low Power

Table 7.

CTRL_REG1 - data rate

DR!

DR0

Data rate generation [Hz]

ODR

100

400

1000

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