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Power supply for KL82

Question asked by Bo Peng on Mar 2, 2017
Latest reply on Mar 3, 2017 by Hui_Ma

I am going to make a customer board with kl82. I have question about kl82 power supply. In Page 125 of datasheet, it says: • VDDIO_E, which is dedicated to powering PORTE, must be powered after VDD and must be greater than or equal to VDD voltage.


While in page 62, it says 

VDDIO is independent of VDD domain and can operate at a voltage independent of VDD. However, it is required that VDD
domain be powered up first prior to VDDIO. VDDIO must never be higher than VDD during power ramp up, or power down.
VDD and VDDIO may ramp together if tied to the same power supply.

VDDIO is an independent voltage supply for PORTE.


I am confused by those two power up requirement. Is it possible for NXP to clarify this point? 


Best Regards,


Bo Peng