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How to enable security on a KL15

Question asked by Safwat on Mar 4, 2013
Latest reply on Mar 5, 2013 by Monica Arvizu

Hi everyone,


I am using a KL15 series MCU for my development.

But I am not sure on how to set the values of the FTFA_FSEC registers to secure my flash.


Since the FSEC register is loaded at reset, I'm guessing that I should populate proper values in the flash configuration field and load the firmware in my MCU. After reset,  FTFA_FSEC register should be loaded with the intended security bits.


Or is it a better idea to use the "in application flash programming" to set the flash config field followed by a reset?


Would be helpful if there was some example on how to properly do this. I don't want to mess up and permanently lock my QFN device. Difficult to manual solder.


Would appreciate some working sample code on how to do this