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???
05/24/11 09:24
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#182356 - It will be embarassing
Responding to: ???'s previous message
Vijay Singh said:
most likely i got some defective microcontrollers. need to get them replaced.

To get them replaced, your supplier will require some hard evidence that they are actually defective.

It will be embarassing to have your supplier check the devices, find them to be OK - and refuse your request for replacement!


Per Westermark said:
it's time for you to start ticking off every single parameter in the datasheet and make sure that you really do have your design up to spec.

Taking the time to investigate & think about what, exactly, is "not working" will help you to focus on the parameters that may need particular attention.

Just saying, "it doesn't work" tells you nothing - it's like saying "my car is not working - what's wrong with it?"

You need to spend some time in diagnosis - you have already been given tips to help with that...

List of 16 messages in thread
TopicAuthorDate
programs not working in 89s51            01/01/70 00:00      
   Debugging time!            01/01/70 00:00      
      Tip            01/01/70 00:00      
   migration document            01/01/70 00:00      
      Up Counter            01/01/70 00:00      
         And what do you deduce from that?            01/01/70 00:00      
            read or write            01/01/70 00:00      
   Have you really read the datasheets??            01/01/70 00:00      
   .            01/01/70 00:00      
      Don't be too hasty to blame the ICs...            01/01/70 00:00      
      an answer in the form of an anecdote            01/01/70 00:00      
   ..            01/01/70 00:00      
      Yes, you are!            01/01/70 00:00      
      Tolerances            01/01/70 00:00      
         It will be embarassing            01/01/70 00:00      
            Thanks friends...            01/01/70 00:00      

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