On Thu, Oct 18, 2001 at 07:23:20PM +0100, Antonio Sergio Sena wrote: > Why dont you use a FRAM ? > > They're very nice NVRAM, that write at the same speed as the bus. Be aware that FRAM wears on reads in addition to writes. And while the number of accesses can be quite high, it is finite. The other issues are always cost, availablility, and product lifetime in terms of manufacturers keeping a part available. Personally I'd go with the EEPROM unless write speed/endurance were a significant issue. BAJ > > And we found that the Dallas RAMCLOCK parts didn't live up to their > > claimed 10 year life. Most died after 6 years. All were dead by 8 years. > > The only problem we've had with Maxim is GETTING parts. The lead time > > on some stuff is ludicrous. > > > > Give the life cycle time on some of the serial EE parts, (1 million > > plus cycles) I'd be inclined to use non-volatile memory (EEPROM). -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu