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MK21FX512 Ezport programming

Question asked by Jason Nguyen on Apr 25, 2016
Latest reply on Apr 29, 2016 by Jason Nguyen

Hi, I am programming the MK21FX512 device using the Ezport pins. I noticed that the F_OPT byte at location 40Dh had an option to prevent entry into EzPort mode during reset. My question is, if I was programming a data pattern into the device but disable the EzPort through the F_OPT in the middle, is the device still programming the data pattern all the way through or does it immediately disables it as soon as I program that byte? Also, am I completely locked out of the device since I am only accessing it through the EzPort or is there a way to still access the device?