Peter L. Peres wrote:

>>> One thing I did not know is, that FRAM also has a limited read cycle
>>> count.
>>   It's very simple.  It's miniature "core" memory.  Reads are
>> performed as writes with sense lines.

> If so, then why does it have a lifetime at all (on a human scale) ?!

  Don't ask me!  It seems to be related to why EEPROM has a lifetime.
Doing funny things repeatedly to a microscopic structure appears to let
bits leak out (literally - as molecules/ atoms).  It pushes too hard.
Don't ask me!
--
  Cheers,
        Paul B.