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???
09/05/07 09:31
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#144041 - Check for loose connections
Responding to: ???'s previous message
Mr Asim,

I experienced the almost similar problem. The controller sometimes goes into boot mode and sometimes not. This was due to the loose connections with the uC board. Also check the Serial port Connections.
Do not forget to RESET the uC after every mode change.
Try this. Hope it will work.
If still does not work, replace the chip with new one.

jprao

List of 14 messages in thread
TopicAuthorDate
Trouble with ISP with P89C51RC2 devices            01/01/70 00:00      
   Trouble with ISP with P89C51RC2 devices            01/01/70 00:00      
      diference between the Atmel's ISP and Phillips ISP            01/01/70 00:00      
         not totally correct            01/01/70 00:00      
   what is "Flash-ISP"?            01/01/70 00:00      
      Trouble with ISP with P89C51RC2 devices            01/01/70 00:00      
         P89C51RD2 and Flash-Magic            01/01/70 00:00      
            Trouble with ISP with P89C51RC2 devices            01/01/70 00:00      
   Oops            01/01/70 00:00      
   difference between the RD2s            01/01/70 00:00      
      RD2 and Flash magic works well            01/01/70 00:00      
          RD2 and Flash magic works well            01/01/70 00:00      
            Check for loose connections            01/01/70 00:00      
            what exactly did you set?            01/01/70 00:00      

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