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???
05/09/09 22:02
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 		 #165206 - i missed that one, but am still right
Responding to: ???'s previous message
the AT89C52 MAY be working while the AT89S52 MAY fail. I guess the newer 'S' is built on a chip with smaller transistors, read, less parasitics and faster gates. The older 'C' simply may reject higher frequency interference because of its clumsyness.

if the faster chip react to noise it is STILL due to
"noise problems are, in my experience, always due to design (e.g. decoupling) and more often LAYOUT (e.g. ground bounce)"



List of 36 messages in thread
TopicAuthorDate
Does anybody has experience with Freescale?            01/01/70 00:00      
   Freescale was Motorola            01/01/70 00:00      
      Have been using MPC (PPC) processors            01/01/70 00:00      
         8051 chips from Freescale            01/01/70 00:00      
            Thanks for correcting...Andy Neil            01/01/70 00:00      
               I thought it was Per?!            01/01/70 00:00      
            Quite possible            01/01/70 00:00      
   I doubt it            01/01/70 00:00      
      well, so let's state it in other way            01/01/70 00:00      
         i missed that one, but am still right            01/01/70 00:00      
      I Agree with you..but...            01/01/70 00:00      
         the trouble is...            01/01/70 00:00      
            Yes..true            01/01/70 00:00      
               nothing to do with noise            01/01/70 00:00      
                  This thread was started Not for Noise Problem            01/01/70 00:00      
            not pin compatible            01/01/70 00:00      
         i do not agree with You...            01/01/70 00:00      
            I think the point is elsewhere...            01/01/70 00:00      
            The reason for Freescale..            01/01/70 00:00      
               What chip?            01/01/70 00:00      
                  No Information Yet            01/01/70 00:00      
                     Always good to get help sifting through the alternatives            01/01/70 00:00      
               ok,            01/01/70 00:00      
                  Errata can be problematic            01/01/70 00:00      
               Be sure to consider all cost implications            01/01/70 00:00      
         Really?            01/01/70 00:00      
            Good enough sometimes the best choice            01/01/70 00:00      
         incorrect            01/01/70 00:00      
   No surprises there, then!            01/01/70 00:00      
      Yes..that's why I started this thread            01/01/70 00:00      
   re:Freescale            01/01/70 00:00      
   There's more features at freescale            01/01/70 00:00      
      Please explain            01/01/70 00:00      
      Freescale has huge amounts of processors            01/01/70 00:00      
         Freescale is Motorola            01/01/70 00:00      
            Neutral name of supplier            01/01/70 00:00      

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