On 6/8/07, Dwayne Reid wrote: > > Apparently only the older "C" (eprom based) parts are usable at those > temperatures. Definite hearsay on my part - I haven't need to run > any uP's that hot myself. > Yes I think the older "C" parts are very robust. Some of them are used quite often in Automotive applications. I've used one (16C72A) 7 years ago and it is still running in a run rate of more than 100k per year now (perhaps more than 150k). Luckily I did not choose the AVRs. ;)- That being said, I will not design anything above specification without the guarantee from the vendor that it will work. Regards, Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist