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???
04/13/08 14:13
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 		 #153194 - Thanks Eric. That explains it.
Responding to: ???'s previous message
My chip is in a commercial board with a 5V Vcc. I had always assumed that the 5131 was the 5V version and that the 5131A was the 3.3V version.

None of the current data sheets explain my chip markings. But your explanation would suggest: -IL for 3.3V and -IM for 5V.

David.

List of 27 messages in thread
TopicAuthorDate
usb driver to use at89c5131            01/01/70 00:00      
   AT89C5131 recognised by FLIP            01/01/70 00:00      
      No recognized yet. "Help please"            01/01/70 00:00      
         No programmer needed.            01/01/70 00:00      
            I just remember            01/01/70 00:00      
            hardware contition            01/01/70 00:00      
               USB device driver            01/01/70 00:00      
            schematic            01/01/70 00:00      
               Email schematic            01/01/70 00:00      
         Did you apply 5V to a 3.3V part?            01/01/70 00:00      
            AT89C5131A-S3SUM-ND is 2.7V - 5.5V            01/01/70 00:00      
               AT89C5131A-UM            01/01/70 00:00      
   Device Manager            01/01/70 00:00      
      Use driver that comes with your FLIP 3.3.1            01/01/70 00:00      
         USB Driver            01/01/70 00:00      
            Try again.            01/01/70 00:00      
               It is finished!            01/01/70 00:00      
                  Pleased that everything works OK now.            01/01/70 00:00      
                     Extended Range            01/01/70 00:00      
                        My AT89C5131-IL does not do correct Vref            01/01/70 00:00      
                           I guess you are led astary or confused            01/01/70 00:00      
                              Thanks Eric. That explains it.            01/01/70 00:00      
   AT89C51RC2 Bootloader process            01/01/70 00:00      
      Just check the box in FLIP            01/01/70 00:00      
         I have already done it            01/01/70 00:00      
            That is what it is supposed to do. Flip manual            01/01/70 00:00      
               Ok            01/01/70 00:00      

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