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NVers.1
Associate
June 9, 2023
Solved

LIS3MDL: Can I use 3v3 for the vddio. Will the voltage of I2C also be 3v3?

Hello,

I want to use the LIS3MDL for a project. I am using a microcontroller with I2C lines at 3V3. In the datasheet there is mentioned that the typical voltage for VDDIO is 1V8 but with a range up to VDD +0.1 V. I will power the device (VDD) with 3V3. If I also use 3V3 for the VDDIO will the sensor communicate at 3V3 or 1V8.

Thank you in advance

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Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
June 9, 2023

Welcome, @Noah Verstraete​, to the community!

Correct, you can operate VDDIO with the same voltage as VDD, if VDD=3.3V.

The sensor always communicates on the level of VDDIO, in this case with 3.3V.

Does that answer your question?

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

3 replies

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
June 9, 2023

Welcome, @Noah Verstraete​, to the community!

Correct, you can operate VDDIO with the same voltage as VDD, if VDD=3.3V.

The sensor always communicates on the level of VDDIO, in this case with 3.3V.

Does that answer your question?

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
NVers.1
NVers.1Author
Associate
June 12, 2023

Yes, thank you for clarifying.

Best regards

Peter BENSCH
ST Technical Moderator
June 12, 2023

You're welcome!

If the problem is solved, please mark this thread as answered by selecting Select as best, as also explained here. This will help other users find that answer faster.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.