Question
There are two power supplies for AVDD and Vp. If we shut down the Vp with AVDD
still on, whether the part will be destroyed? If not, whether the current for
AVDD will be larger than without Vp?
Answer
It is not acceptable for the Vp pin to be at a lower voltage than AVdd. Vp
should always be greater than Vdd as there are diodes between these supplies.
The diodes are to prevent Vp going below Vdd. So Vp should not be removed
before Vdd.