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    BME680 Power Supply

    BME680 Power Supply

    sguigue
    Member

    Hi everybody,

    I'm using a Bosch BME680 for application and I have a question concerning power supply:

     

    Is it possible to power VDD and VDDIO to 1.8V from one power source, and having the SPI pin coming from the MCU at 1.2V?

     

    Kind regards,

    Sebastien

    7 REPLIES 7

    BSTRobin
    Community Moderator
    Community Moderator

    Hi sguigue,

    You could see it from SPI section in data sheet, minimum voltage level should be 80%VDDIO=0.8*1.8=1.44V, but you MCU supplied with 1.2V. This does not meet the specification requirements.

    SPI interface parameters.png

     

    Hi,

    thank you for your answer,

    So if I can put the VDD to 1.8V and VDDIO to 1.2V, then i should meet the specifications and have a correct SPI communication. Do you agree with that?

     

    Kind regards

    BSTRobin
    Community Moderator
    Community Moderator

    Yes, sguigue.

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