BME680 Power Supply

[sguigue]

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

[BSTRobin]

Hi sguigue,

Does your MCU only support 1.2V power supply? How about the ripple of 1.2V power supply?

[sguigue]

Yes my MCU has to be powered at 1.2V, according to the datasheet it seems to be ok but I have a doubt about having these two differents voltage levels...

Kind regards

[BSTRobin]

Hi sguigue,

The power supply has ripple more or less, so the power supply voltage will be less than 1.2V. It is not recommended to use it at this time.

[sguigue]

Hi,

Thank you for your answer, I thought about this issue, this is why the voltage supply of the sensor will be 1.8V. But my question is, can I have MOSI/MISO/SCLK set on 1.2V voltage supply without having problems with the 1.8V supply?

Kind regards