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???
07/14/08 16:34
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#156698 - Fuse Settings
Responding to: ???'s previous message
Sorry, I misread your post. I wrongly assumed AVRISP.

Since the 89S5253 has several fuse settings, it is worth getting your programmer to read these.

A common problem with AVRs is for the device to be using a different clock to what the user thinks. Perhaps a similar situation where the fuses have been set after the erase.

The programmer should reliably read the signature bytes and security bits. You should also be able to read an erased chip as FF FF ...

David.

List of 11 messages in thread
TopicAuthorDate
Problem prog AT89S8253 with AT89isp            01/01/70 00:00      
   S8252 and S8253 have different ISP to S52 and S53            01/01/70 00:00      
      I use AT89isp Ver 2.8 software            01/01/70 00:00      
   Try a different procedure for AT89ISP            01/01/70 00:00      
      I have tried that many times            01/01/70 00:00      
   why not ask Arghmel ?            01/01/70 00:00      
      I have asked ATmel Technical support            01/01/70 00:00      
         Fuse Settings            01/01/70 00:00      
            'fuses'?            01/01/70 00:00      
               That is what the manufacturer calls them.            01/01/70 00:00      
                  I know of no (other) \"modern Flash design\" that do            01/01/70 00:00      

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