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???
07/13/06 06:29
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#120151 - No ambiguity!
Responding to: ???'s previous message
Manoj Kumar said:
I am new to 80C52 controllers.

Then you need to start with the so-called "bible" for the 8051:

Chapter 1 - 80C51 Family Architecture:
http://www.semiconductors.philips.com/acrobat/v...ARCH_1.pdf

Chapter 2 - 80C51 Family Programmer’s Guide and Instruction Set:
http://www.semiconductors.philips.com/acrobat/v...UIDE_1.pdf

Chapter 3 - 80C51 Family Hardware Description:
http://www.semiconductors.philips.com/acrobat/v...WARE_1.pdf


For an I/O pin, we require two information: one is the direction information

For a standard 8051 port, there is no such information!

See: http://www.8052.com/forum/read.phtml?id=104320

See also: http://www.8052.com/forum/read.phtml?id=88984 - which gives the chapter & verse reference in the "bible"



List of 7 messages in thread
TopicAuthorDate
ambiguity regarding ports in 80C51/80C52            01/01/70 00:00      
   No ambiguity!            01/01/70 00:00      
   Input/Output            01/01/70 00:00      
      That's it!            01/01/70 00:00      
         FAQ FAQ !            01/01/70 00:00      
   Please, look at that:            01/01/70 00:00      
   Have you considered reading the "bible"?            01/01/70 00:00      

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