AVR-Chat

This kind of problem is already discussed in this group, but I  could never finaly gather what might be a 'standard way' to wake up a dead AVR when osc fues bits are wrong programmed. Let's assume I have an AVR on my desk and do not know how osc fuesbits are programmed. Is the only way trying every possible configuration? This way doesn't seem a wise one to me.
If I were AVR manufaturer, I would set up a seperate emergency osc.  inside  mcu to at least have access to fues bits to avoid such dead situations to happen.


 


Hendy Eka <grabtheedge@yahoo.com> wrote:                                  Thanks before for the pleasant to read and may give an idea to my 
 problem.
 
 I had program an ATMEGA8535 using my min. system with ex. crystal 
 oscillator. Actually never at this time (I always use calibrated 
 internal osc, i scared).
 
 I use 4 MHz crystal oscillator but at those time i don't know what's 
 the problem my ATMEGA8535 doesn't reponse anymore. I use ponyprog 
 programmer.
 
 Is this true using osc pin in ATMEGA in order to wake up my avr again?
 
 :(
 
 
     
                       

 		
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