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03/16/12 06:05
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#186724 - Unlocked
Responding to: Jan Waclawek's previous message
Jan your method worked like a charm. Was able to get the SerProgEn fuse re-enabled going by the recommended P3.3-P3.7 sequence and the parallel programming specification.

Now I seem to have another issue. I cannot get my AT89ISP software to write the fuse bits. I have my final revision of code and am about to distribute the pre-loaded chips. The software seems to write the lock bits fine, but if I try to disable the SerProgEn fuse, it doesn't do it. I uncheck it, it gives me the warning, in which I click OK, then I click the "Write" button. Only to find that the fuse bits are still the same.

Anyone else experience this issue?

List of 7 messages in thread
AT89S8253 SerProgEn Fuse      Jon Wilder      03/07/12 18:18      
   Situation Vague      Michael Karas      03/07/12 23:38      
   fuse bits      Jan Waclawek      03/08/12 00:35      
      I have plenty of 8253's in stock...      Jon Wilder      03/08/12 08:44      
         Unless You Call a Favor      Michael Karas      03/08/12 13:53      
            what's hobbies about      Jan Waclawek      03/08/12 22:43      
               Unlocked      Jon Wilder      03/16/12 06:05      

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