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mfrc631 chips break down during normal operation

Question asked by Zbigniew Kalisiak on Nov 9, 2018
Latest reply on Nov 21, 2018 by vicentegomez


Many mfrc631 chips on my antenna board break down (burn out) during normal operation (Mifare card reading) without external stimuli. Is it possible that with properly designed hardware the software could damage the chip? Where should I look firstly for problems : hardware / software ? What could be the reason?

I noticed that powerdown signal is very sensitive and when stay not connected it quickly leads to damage.



Zbigniew Kalisiak