VDD_SNVS_IN connection recommendations

[ko-hey]

Hi all

I want to confirm about VDD_SNVS_IN recommendation.

According to the Table 2-6 of Hardware Development Guide, there are a recommendation as below.

When VDD_SNVS_IN is not powered by a battery, it is recommended that VDD_SNVS_IN = VDD_HIGH_IN.

This description means that if user don't use coin-cell battery, they should provide to VDD_SNVS_IN and VDD_HIGH_IN form same source.

Is it correct ?

Ko-hey

[igorpadykov]

Hi Ko-hey

this is not obligatory, but most suitable option.

Still one can use power-up sequence as defined by datasheet:

VDD_SNVS_IN supply must be turned ON before any other power supply.

It may be connected (shorted) with VDD_HIGH_IN supply.

...

Best regards

igor

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