Good Q.
Brent Brown wrote:
> Hi,
>
> Interested to hear from anyone experienced with Ramtron Ferroelectric
> Nonvolatile RAM chips. I have a micro board that is experiencing occasional
> corruption of data stored in a FM24C256 FRAM chip. I wondering if these
> things are sensitive to electric/magnetic fields?
>
I've designed them into lotsa stuff over the years, without the
slightest failure.
> I can not rule out errant code on the micro causing the corruption by errant
> writes to the FRAM, but also the level of EMI in this application is not
> insignificant which makes me curious. We have had problems with radiated
> EMI from this board design in the past, and that was overcome by metal
> coating the inside of the plastic enclosure.
>
Thats possible, of course.
> Any comments welcome. I'm curious enough to start some doing some
> bench tests to see if I can corrupt the contents of the FRAM.
What I DO know is that it is NOT affected by a powerful alnico magnet.
I've never understood exactly what is going on, but they certainly work.
Let us know what you find out!
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Bob Axtell
PIC Hardware & Firmware Dev
http://beam.to/baxtell
1-520-219-2363
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