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???
10/04/05 19:40
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#101948 - Don't forget BLJB
Responding to: ???'s previous message
Hi Paul,

When Atmel ships a 'CC0n its fuse bits are set so the bootloader automatically runs. After programming you need to reset this bit, otherwise instead of the application running the bootloader runs again.

Once your application is running you can run the bootloader again by forcing PSEN low when Reset is active.

The datasheet's "hardware boot process algorithm" explains it nicely.

Dennis

List of 18 messages in thread
TopicAuthorDate
How to do ISP, flip ect.?            01/01/70 00:00      
   do not5 forget the MAx232(equivalent) al            01/01/70 00:00      
   FLIP is Atmel specific            01/01/70 00:00      
   Try it            01/01/70 00:00      
   be careful            01/01/70 00:00      
   How to do ISP, flip ect.?            01/01/70 00:00      
      Yup.            01/01/70 00:00      
      Don't forget BLJB            01/01/70 00:00      
         !PSEN            01/01/70 00:00      
            Oops            01/01/70 00:00      
   Using CAN bus?            01/01/70 00:00      
      small form factor            01/01/70 00:00      
         How to do ISP, flip ect.?            01/01/70 00:00      
            AT89C55WD or Atmega series            01/01/70 00:00      
               ADC            01/01/70 00:00      
                  How to do ISP, flip ect.?            01/01/70 00:00      
               compared to what?            01/01/70 00:00      
            if you need analog, go for SILabs            01/01/70 00:00      

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