On Friday 12 October 2007 17:42, Glen Slick wrote: Thanks for the datasheet, it complements the one I have from microchip. The one bit of info I'm looking for, though, is what sort of limits there might be on the number of write cycles for those parts. Is this one of those deals where there's a limited number of them and then you're screwed? That limit would have a lot of effect on which applications one might want to use those parts in, by comparison with other stuff. I see lots of different possibilities for NVRAM of one sort or another, ranging from EPROM replacement (probably a good one for EEPROM) to datalogging to all sorts of other stuff -- with each application having different numbers of write cycles one might expect to have available in the device. I see an awful lot of people seeming to use flash devices as if you can just keep on writing to them indefinitely these days, and I'm sure that's not the case, though it may be that the number is so high it doesn't make all that much difference... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin