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???
02/07/05 13:09
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#86740 - Reliability?!
Responding to: ???'s previous message
Ahmad Faisal Mohd Taib said:
At89C51ID2 ... not so reliable in terms of if the MCU shorted (any of its pin)


The 8051 family can not be damaged by shorting pins against others or GND, because the outputs are open drain !

I have it not tested to short a pin to VCC.


The only way, that I damaged an 8051 was to short a pin with +12V.
But then only this pin was dead, all remaining pins and the core are still working right.


A more probably way to damage an IC was to use to less or wrong capacitors on the voltage regulator or powering an IO-pin prior VCC rise or after VCC drop.


Peter


List of 20 messages in thread
TopicAuthorDate
Microcontroller            01/01/70 00:00      
   microcontroller            01/01/70 00:00      
      I would use the SiLabs Part            01/01/70 00:00      
         microcontroller            01/01/70 00:00      
            "afford TQFP"            01/01/70 00:00      
               TQFP            01/01/70 00:00      
                  soldering TQFP            01/01/70 00:00      
                     all you need            01/01/70 00:00      
                  TQFP Work            01/01/70 00:00      
      Reliability?!            01/01/70 00:00      
          Reliability?!            01/01/70 00:00      
         reliability            01/01/70 00:00      
            death deferred            01/01/70 00:00      
      reliability            01/01/70 00:00      
         not found suitable            01/01/70 00:00      
            QFP vs TQFP            01/01/70 00:00      
   I think this microcontroller is the best            01/01/70 00:00      
      ... but off topic!            01/01/70 00:00      
      Best?            01/01/70 00:00      
         re:best?            01/01/70 00:00      

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