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???
06/20/05 16:23
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 		 #95373 - Noise margins
Responding to: ???'s previous message

The MCU has no means of detecting what and thus can not do anything but to give you a '1' or '0'.

Erik,Do you check it before?

Mehdi,

This is just part of normal electronic engineering knowledge: digital signals outside the stated margins are indeterminate. It is not open to question, it just IS.

You have to MAKE the signal determinate.

Steve


List of 49 messages in thread
TopicAuthorDate
Invalid input voltage?            01/01/70 00:00      
   read the specs            01/01/70 00:00      
      Re:read the specs            01/01/70 00:00      
         Noise margins            01/01/70 00:00      
            Re:Noise margins            01/01/70 00:00      
            MAKE the signal determinate            01/01/70 00:00      
   0 or 1            01/01/70 00:00      
      Fuzzy logic...?!            01/01/70 00:00      
         zone between VIL and VIH            01/01/70 00:00      
         zone between VIL and VIH            01/01/70 00:00      
            The 'grey' zone            01/01/70 00:00      
               Illogical signals help us to having...            01/01/70 00:00      
                  Well, I'm lost!            01/01/70 00:00      
                     Re:Well, I'm lost!            01/01/70 00:00      
                        Scopes            01/01/70 00:00      
                           Re:Scopes            01/01/70 00:00      
                     7 or 9 value logic            01/01/70 00:00      
                  I understand what Mehdi is saying.....            01/01/70 00:00      
                     Ah            01/01/70 00:00      
                     excellent, Michael            01/01/70 00:00      
                        triad            01/01/70 00:00      
                     wow, Mike            01/01/70 00:00      
                     There's the rub            01/01/70 00:00      
                     Detect What?            01/01/70 00:00      
                     Absolutely but!            01/01/70 00:00      
                        a question based on a guess            01/01/70 00:00      
               Not debounce. Hysteresis/schmitt            01/01/70 00:00      
                  Re:Not debounce. Hysteresis/schmitt            01/01/70 00:00      
                     Well, then ADC.            01/01/70 00:00      
         It Could be            01/01/70 00:00      
            "undefined operation"            01/01/70 00:00      
               Undefined            01/01/70 00:00      
                  Exactly            01/01/70 00:00      
   Thanks...            01/01/70 00:00      
      based on the above            01/01/70 00:00      
         Erik:Based on mehdi's emphasis            01/01/70 00:00      
            Thanks            01/01/70 00:00      
            Wow.            01/01/70 00:00      
               I describe it!            01/01/70 00:00      
                  Service            01/01/70 00:00      
                  I will never            01/01/70 00:00      
                     I will always            01/01/70 00:00      
            the missing if            01/01/70 00:00      
   Port 0 output when no power            01/01/70 00:00      
      Port 0 to Port 0.            01/01/70 00:00      
         Voltage Divder of 10k            01/01/70 00:00      
            nope            01/01/70 00:00      
               2 line solution            01/01/70 00:00      
                  I do somethimes my thumbs have another o            01/01/70 00:00      

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