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Per Westermark
08/23/12 16:07
Read: 508 times
Sweden


 
#188148 - Ageing
Responding to: Erik Malund's previous message
Partially updating a page normally don't wear out the flash page, so the normal routine is to just count number of page erases.

But I have seen some manufacturers mention that the storage quality of the other bits are affected by the partial writes. So some manufacturers have given info to not perform more than 10 partial rewrites before erasing the page and rewrite all info. All to maintain the 10+ years of retention.

The wear is the high voltages forcing electrons through the isolation, making the isolation slowly break down.
Must be some wear even when cell not toggles but hard to say how much.


List of 6 messages in thread
TopicAuthorDate
flash endurance      Erik Malund      08/23/12 13:43      
   Write (sic) endurance        Andy Neil      08/23/12 14:16      
      so I thought      Erik Malund      08/23/12 14:37      
   Ageing      Per Westermark      08/23/12 16:07      
      writing zeroes      Maarten Brock      08/25/12 00:28      
         File systems      Per Westermark      08/25/12 05:26      

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