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FM24C256 drastic endurance difference ?!

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nipil:
Hello, quick question, hopefully simple enough...

FM24C256 from Fairchild :
Endurance: up to 100K data changes

FM24C256 from Ramtron :
High Endurance 100 Billion (10^11) Read/Writes

How can the same référence, with the same technologue, have SIX ORDERS of magnitudes of difference ?!

Am i missing something ?

Thanks in advance
Nicolas

voltsandjolts:
Fairchild device is an eeprom

nipil:

--- Quote from: voltsandjolts on May 22, 2023, 08:06:19 pm ---Fairchild device is an eeprom

--- End quote ---

Soooooo.... it seems i have bought the right name, from the wrong manufacturer, because it was cheaper. Great.

And... all that because i was not smart enough to guess that there could be two COMPLETELY different functions. How the hell can this happen ?!

It's the first time i stumble upon dissimilar references, is it something common or is it rare ? Should i be more attentive when shopping, as i usually only lookup references ?

tom66:
You have made the unfortunate mistake of truncating the part number.

FM24C256-G for instance is one instance of a Fairchild/Onsemi part.

FM24C256N for instance is one instance of a Fairchild/Onsemi part.

"FM24C256" is just a type identifier for a non-volatile memory, the technology can be multiple types.  Though this is the first case I have seen of mixing FRAM and EEPROM... and I can't lie and say I wouldn't make the same mistake.

Benta:
Well, would you blindly replace an M6 hardened steel bolt with some M6 decorative brass bolt?
Read the data sheets. I feel no pity, sorry.

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