LIS2DH12: doubt about the power supply

[MYmer]

If my Vdd is the same of Vdd_IO, can I directly connect pins 9 and 10, and use only two capacitor (100nF ceramic + 10μF aluminum) in my PCB?

The datasheet say that: "All the voltage and ground supplies must be present at the same time to have proper behavior of the IC", but someone told me that I have to ensure that Vdd_IO is "faster" that Vdd, I mean, first apply Vdd_IO, then apply Vdd.

Could you please confirm my thought?

Thank you for your attention.

[S.Ma]

I would guess so and if you'd like to make sure, check out some reference board or x-nucleo if available.

If it's the same supply valid supply voltage, I would guess it's ok.

Just make sure the GPIOs of the MCU driving the sensor are still inputs until the LIS is fully powered up.

For the official legal statement, just check the electrical tables in the datasheet and any notes regarding both supply voltages.

[Miroslav BATEK · Accepted solution]

Yes, you can connect VDD and VDD_IO together and use the two capacitors.

[MYmer]

Thanks for the confirmation.

[MYmer]

Thanks for your suggestions.