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???
12/12/07 13:12
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#148097 - one more issue
Responding to: ???'s previous message
Flash memory for example has a guaranteed data rentention period (usually a decade or more, but still finite).
one more issue: if you store 'permanent data' in flash and update frequently, you may run into endurance issues. You can only erase a flash cell a limited number of times (I have seen endurance numbers between 1k and 1M).
I inherited a design where this hit (10k endurance chips) and had to change it to "walking storage"

Erik

List of 12 messages in thread
TopicAuthorDate
Life expectancy for 89c2051            01/01/70 00:00      
   Depends on how cruel you get with your design            01/01/70 00:00      
   No wear mechanism            01/01/70 00:00      
      In theory.            01/01/70 00:00      
         one more issue            01/01/70 00:00      
         Even not in theory, of course!            01/01/70 00:00      
            Not in the datasheet.            01/01/70 00:00      
            datasheet is not the only source of information            01/01/70 00:00      
               FITs, MTTF, data retention bake            01/01/70 00:00      
   Life            01/01/70 00:00      
      Sandy have a look at this , it could give you some            01/01/70 00:00      
    Life expectancy for 89c2051            01/01/70 00:00      

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