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Applying voltage to GPIO pins on K22 device while unpowered

Question asked by ryanmonfils on Jul 1, 2016
Latest reply on Jul 3, 2016 by jeremyzhou


I generally try design hardware such that voltage is NOT applied to un-powered device pins, however I am unable to avoid it in this case.  I know this question has been answered in other forums but not for the K22 device, specifically the K22FN1M0VLL12.

 

Is it OK to apply 3.3V to a GPIO pin through a 10K pull-up resistor when the rest of the device is not powered?  The datasheet does talk about 5V tolerant pins but doesn't give a clear answer on my specific question.

 

Thanks!

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