IFR Program Once Read Command With Debugger

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IFR Program Once Read Command With Debugger

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guitardenver
Contributor IV


Is there any way to read the program once IFR region with a debugger? Can the debugger tell the flash module to execute the Read Program Once Command (Assuming the device is un-secure)? For security reasons, external access to this region is unacceptable in our application.

MCU: MK22FN512

Debugger: Any

Thanks,

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guitardenver
Contributor IV

Partly answered my own question.

Even if the debugger could not read that region,

If security is a concern, someone could issue a mass erase command and put their own program on their to read the IFR region themselves. So we will not be doing this.

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bobpaddock
Senior Contributor III

Some devices can disable the Mass Erase command.

Doing so may make a lot of 'Bricked' devices if things are not fully thought through...

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