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???
10/02/06 13:35
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 		 #125599 - My predecessor did just that
Responding to: ???'s previous message
DON'T try using FLASH as RAM without a lot of care. FLASH has a very finite number of erase cycles before it becomes unreliable
My predecessor did just that and now we are replacing code all over the place because of 'flash failures'. The new code condider the sector previously used for this DEAD and has a 'walking write' and is calculated to keep the flash going for 50 years instead of the 5 my predecessors code allowed.

Erik

For your app I would not consider anything but a parallel FRAM ( http://www.ramtron.com ) it would drop the requirement for reload and allow you to run at full speed (you WILL be surprised how much speed you need for scrolling)

List of 28 messages in thread
TopicAuthorDate
large amounts of serial data            01/01/70 00:00      
   Need More Information            01/01/70 00:00      
   Use derivative with more ram            01/01/70 00:00      
   some other options            01/01/70 00:00      
      careful now ... what you want ISN'T EPROM            01/01/70 00:00      
      Message validity            01/01/70 00:00      
      A Possible Simplification? Maybe?            01/01/70 00:00      
         Ramifications            01/01/70 00:00      
            Whoops! Corrections!            01/01/70 00:00      
            Ramifications Acknowledged            01/01/70 00:00      
      trouble            01/01/70 00:00      
         scrolling and serial memory            01/01/70 00:00      
            the problem with scrolling            01/01/70 00:00      
   EEPROM writing            01/01/70 00:00      
      SRAM with a battery            01/01/70 00:00      
      Some Options            01/01/70 00:00      
         RAMTRON; FRAM; MRAM            01/01/70 00:00      
      2x 2k            01/01/70 00:00      
         Power fail recovery            01/01/70 00:00      
            options I will use now            01/01/70 00:00      
               But don't forget ...            01/01/70 00:00      
               Power Loss detector            01/01/70 00:00      
         absollutely            01/01/70 00:00      
   one last question            01/01/70 00:00      
      Flash is Not RAM            01/01/70 00:00      
      FLASH <> RAM            01/01/70 00:00      
         My predecessor did just that            01/01/70 00:00      
      options, options....            01/01/70 00:00      

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