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Erik Malund
01/18/12 07:38
Read: 449 times
Mt Airy, Nc
USA


 
#185551 - well, I'm not
Responding to: David Prentice's previous message
The OP:Not sure if I like the fact that everything that gets driven on an output pin must be buffered,

response: So I am surprised by your 'buffer' comments.

well, I'm not. as the OP has chosen a derivative with "classic" ports, buffering will be needed in many cases.

I do suggest to the OP that he, next time, choose a derivative with configurable ports and avoid the problem. The choice of a derivative will, often, for a beginner (in '51) be "random", since the knowledge of dramatic differences the myriad of variants have is not a typical "first go" fact.

Erik



List of 10 messages in thread
TopicAuthorDate
Thanks To All        Jon Wilder      01/18/12 03:28      
   Single chip solution is simple      David Prentice      01/18/12 05:09      
      well, I'm not      Erik Malund      01/18/12 07:38      
         Additional pull-ups are sufficient in many cases...      Kai Klaas      01/18/12 08:22      
            Why not choose a modern 8051?      David Prentice      01/18/12 08:49      
               I wasn't aware...      Jon Wilder      01/18/12 12:29      
                  sure      Erik Malund      01/18/12 12:49      
                     Some Atmel and STC chips too      David Prentice      01/18/12 13:49      
                  SiLabs      Andy Peters      01/19/12 10:17      
                     SILabs      Erik Malund      01/19/12 10:47      

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