My big concern is the write-ability: We've all had a pointer go blooie (which is less likely in high(er)-level languages like C than in assembler, but a 16k chip is probably going to see assembler). Do they provide some way to lock/protect the code portion of the memory?
I think it has a shot at replacing SRAM but Flash is currently used for MB storage. MRAM is another candidate commonly proposed for the same purpose, because of its high (also not unlimited) endurance. Both can also be disturbed by cumulative if not direct reads. I wonder which would be the preference.
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