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???
09/30/06 04:53
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 		 #125410 - careful now ... what you want ISN'T EPROM
Responding to: ???'s previous message
You clearly want EEPROM, not EPROM. The EEPROM is nonvolatile and both readable and writeable. A serial version is probably adequate. IIC or SPI interfaceable varieties seem to be popular.

Whether you can change MCU's is up to you. I'd suggest you at least look for a device with a RAM buffer on board that's battery-back-able. That way you won't get caught with a power loss in the midst of writing from RAM buffer to EEPROM, which can take a while. You also won't get caught with serial comm's interrupting your EEPROM write, which might be inconvenient.

RE




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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