Retention of flash data memory after programming.

Hi

I am currently working on RA2E1A9. After programming in production some data is stored at flash data memory.

Is it possible to field program my RA2E1 without getting the data memory erased.

Is it possible within my code that i disable the flash data memory to disable while reprogramming.

With J Flash it is possible but I am planning to enable this within my code.

Regards

Sudhanshu

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