The nRF7200 power up sequence

[WojciechS]

Hello All,

Is it obligatory to process power on sequence when NRF7002 is connected (IOVDD) permanently to Host's power supply e.g. 3,3V
Is it possible, do not make the power up sequence?
Is there any risk to put the module into the undefined state?

The power up sequence and requirements are:

• Supply VBAT/BUCKVBAT/BUCKVBATS/AFEVBAT
• Wait ≥ 6 ms
• Assert BUCKEN
• Wait ≥ 1 ms
• Supply IOVDD

The power down sequence and requirements are:

De-assert BUCKEN and power down IOVDD

• Power down VBAT

There are no specifics timing delay requirements as long as the sequence is correct.

Thank you

[Simonr]

Hi

When powering the nRF7002 these are strict requirements that needs to be followed. But it's not necessary to do very often in products that are permanently powered, and you'll only have to take this into account on unexpected power losses etc.

You should never not power up the device without following this "sequence" though.

Best regards,

Simon