Re: Flash retention in uC at higher temps, experience?

Joerg wrote:
> The flag is the problem. Unfortunately uC manufacturers have not put 
> that much thought into the reset routine. It just jumps to a fixed 
> address and when the data there is corrupt the application is toast.

I'm working with an 89lpc952 (Phillips/NXT) which comes preprogrammed 
with a bootloader in the top Flash sector.  There's a flag that, when 
set, will cause execution to start there instead of the normal reset
vector.

You're free to overwrite the bootloader with something else, so perhaps 
that facility could be used for one side of the flipflop?

Of course, the '952 also has IAP which I don't think can be disabled...

-- 
Gordon S. Hlavenka           http://www.crashelectronics.com
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