I need a memory which a small byte value (10 bytes) must be written to on the order of 1,000 times per day, with a life time of 5 years minimum, and retain through power cycles. The maximum time the machine will be off will be a few days, much like a pc, any longer and it does not need to retain this data.
I have heard of some battery-backed ram chips, or even IC's with the battery 'built in' and a very long life, i like the sound of this, minimum fuss.
Flash memory is no good, as i understand it they only guarantee around100,000 writes to any particular location.
Anyone have some suggestions ? The interface is not important, we will do what we have to (microprocessor) to use it, and writing speed is also not an issue. We want relaible long-term storage and many writes.
Thanks :) Alex.