LPS331AP

hitwch · ‎2014-01-09

Posted on January 10, 2014 at 07:54

I can't find a forum about barometric pressure sensor.

I hope to know the wake up time of the chip from the power down to ready status for the measurement. I also need to know the measurement and conversion time for the highest resolution sampling.

Or is there anyone else who can tell me where I should post this question.

Nickname3482_O · ‎2014-10-08

Posted on October 08, 2014 at 12:17

You can consider a turn-on time of 50 ms.

Nickname3482_O · ‎2014-10-08

Posted on October 08, 2014 at 14:44

Hello,

just realized that I previously provided feedback for wake up time but missed the second part of the question :

regarding conversion time for the highest resolution sampling (which by specification means 512 averaged points for pressure and 128 for temperature - to be set in register 10h) conversion time to take in account is about 42ms.

Best Regards

Nickname3482_O · ‎2014-10-08

Posted on October 08, 2014 at 15:24

Mr. Wang,

following my latest answer it's probalbly also woth to mention that enventhough conversion time is about 42ms, if you are not running the sensor in ''one shot'' mode you will have to wait for the end of the sampling interval related to the chosen output data rate (ODR) before you get the measurements updated in the output registers. In the case of maximum resolution, max ODR you can choose can be 12.5 Hz which means that sampling interval will be 80ms.

Hope this helps,

Best Regards