Hi,
The required power-up sequence is: GND, Supply Inputs (VDD and VSS), Digital Inputs (P0-P4), RF Input (RF1/RF2). Deviations from this sequence may inadvertently forward bias ESD protection structures and damage them.
The relative application order of the supply inputs (VDD and VSS) is not important.
The relative application order of the digital inputs (P0-P4) is not important.
Best