Dear Nordic and community,
I am currently in pre-production phase of designing a PCB based on the NRF9151, and I am a bit confused by the Hardware Device Guidelines, which states the following (chapter 3.6,p28):
"• VDD_GPIO should be applied after VDD has been supplied.
• VDD_GPIO should be removed before removing VDD."
In my design, I am powering both lines from the same 3.3V supply (see figure).
So it seems to me that they would the supply would be powered and removed at the same time, rather than in a specific order.
Is this acceptable, and otherwise what can be recommended as the common (and preferably simplest) solution?
I do not have any intentions of powering these supplies individually, or at different supply voltages.
Any assistance and recommendations would be highly appreciated!
Kind regards,
Dirk