Hi,

in harsh environment 100% yes. Flash can be erased by spikes trhrough VCC or (ra
rely) I/Os.

Jan.
>
> My top 3 choices are:
> 1- OTP
> 2- OTP
> 3- One Time Programmable (equiv of a prom)
> the memory is nonerasable
> John
>
> >         Hi, all.
> > I'm on a proyect to build a small and very dumb controller to drive a
> stepper
> > motor, the program just start when one pin go to low state and move the
> > motor at about 80pps for 10 seconds, that part is O.k. works fine,
> > but It must work fine at the space for about a week, shuttle nominal
> > altitude, so the question is: which kind of device to do this is better:
> > EEPROM, EPROM or FLASH??.
> >
> > I know that radiation and high enery particles erases most memories but
> > if the enclosure is good they will need more than a month, may be more to
> > erase at least 1 bit (I'm talking about EPROM) but I have no idea about
> > the other kind of memories EEPROM and FLASH.
> > have someone an idea which will be the difference in this enviroment?
> > I need to make a decision about the pic to use for that app.
> > thanks!.
>
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