Lpc2000

> Because it is "just like RAM" once might be tempted to try place
> variables in FRAM or data items that you read frequently (data as
> well as code). In this case you could hit that 10^12 cycles pretty
> fast. With worst case code on an LPCxxx style device you could end up
> hitting the FRAM for more than 10^7 cycles per second, giving only a
> useful life of 10^5 seconds or just over a day.

Not quiet right. I just looked up on datasheet at Ramtron.
The max. bus-freq. is 1E6 Hz for a 256KB FRAM.
20bits to read memory => max. 50000 reads/s
The chip I look at has an endurance of 1E10, gives 200.000s ~= 138d.

Also not forever, but slightly longer :-)

> As always, design with your eyes open!
Anyway a good hint :-)

-- 
42Bastian Schick