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Can continuous TVDD 5V into PN5180 cause field reset failure

Question asked by Denis Collis on Mar 26, 2018
Latest reply on Apr 19, 2018 by Denis Collis

I have a PN5180 NFC front-end coupled with a K81 MCU.  A 5V regulator can be enabled by either processor.  This is because the 5V rail is also needed for a loud buzzer.  During PCD/CL1 testing we keep 5V continuously enabled.  Does this affect the PN5180 functionality in any way?  In other words, does it need to have exclusive control of the 5V supply to TVDD?  Perhaps needed for a field reset?

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