H3LIS331DL: Consumption during 10Hz Low power mode, and wakeup reactivity ?

[PGoud]

Hello,

Is there any ressource describing the consumption during 10Hz Low-power mode ?

On my side I think I can see little peaks each 100ms then one litle larger peak each 2 seconds.

• Is that the normal behavior ?
• Is it possible to find a typical consumption curve of the sensor during LowPower mode ?
• If the 2 second litle larger peak is a particular processing, could it imply a kind of latency before the awaking of the sensor (passing in normal mode, or generating IT), maybe due to the eventual High pass filter ?

In advance thanks

[PGoud]

At the moment I just use the H3LIS331DL.

And my problem was finally the "internal pull-up on SDO" that drain about 70uA.

Looking at the datasheet this pull-up does not seem desactivable . Please confirm me.

But in a future we may use LISDE12TR and eventually in conjunction with H3LIS331DL... so in that case the "Desactivable pull-up" on LIS2DETR will be the solution. OK.

So, if you want the topic can now be closed.

Thanks for these exchanges.

[Eleon BORLINI]

Hi @PGoud​ ,

you're welcome.

>> Looking at the datasheet this pull-up does not seem de-activable. Please confirm me.

You are right, the pull-up is not de-activable from the standard configuration register. As an alternative, you could try with the 90h in CTRL_REG0 (1Eh) for the H3LIS331DL too, but this is a reserved register and should not be modified... a power off-on of the device will restore the factory calibration data.

-Eleon