Ramtron's FRAM?

Jan 13, 2004 2 Replies
A

Has anyone here used Ramtron's FRAM products? I'm looking at using thier FM24CL64-S, which is a 64k (supposedly) I2C, low voltage FRAM chip. I have a few questions however -



Is it REALLY I2C? The distributor lists it as I2C, but ramtrons datasheet just says its an "industry standard" interface.



Under read/write cycles in the datasheet, it simply says "Unlimited" ... I know i sound horribly sceptical, but is this really the case?



Has anyone found a supplier that consistantly stocks these chips? Or has a stock of this chip in DIP? I'd like to breadboard a bit before i try pounding out a board, and i'd like to have a few spare.



Thanks!



-Alex



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G

Yes it is I2C but they also do SPI versions which are much faster and slightly easier to use.

The number of write cycles is limited to 10^12 times, which is 'almost' unlimited.

They have sent me samples, but it took ages. Farnell stock them in the UK.

The FRAM is great, I used it as scratch ram and it is very fast. No more worrying about write cycles!

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