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drmaxoude
Associate
Dec 18, 2018 1:35 PM UTC
Solved

I have a current consumption of 1.2 mA after reboot with my LIS3DHTR.

Hi everyone,

I'm using a LIS3D in my schematic. Everything works fine. I can read the register "WHO_I_AM" without any problem.

BUT : I have a current consumption of 1.2 mA. Can you help me ? I don't understand how is it possible.

Here is my schematic :

0690X000006CrTTQA0.png

I'm working with an I2C interface.

Thanks for your help.

Best regards

    This topic has been closed for replies.
    Miroslav BATEKBest answer
    ST Employee
    Dec 18, 2018 2:04 PM UTC

    CS pin cannot be floating, if you use I2C connect the CS pin to VCC.

    R67 on SDO pin creates voltage divider with internal pull-up and the level won't be well defined.

    1 reply

    Miroslav BATEKBest answer
    ST Employee
    Dec 18, 2018 2:04 PM UTC

    CS pin cannot be floating, if you use I2C connect the CS pin to VCC.

    R67 on SDO pin creates voltage divider with internal pull-up and the level won't be well defined.