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???
01/10/07 14:21
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 		 #130565 - read
Responding to: ???'s previous message
any code and diagram plz..
NO WAY, you will learn NOTHING from that

how can i use port 0 and p1.0 as output? it seems they were initially 0x00h when the controller is on

what you need is (I know it is a 4 letter word) is to read, at least the following

"the bible"
Chapter 1 - 80C51 Family Architecture:
http://www.nxp.com/acrobat_d...ARCH_1.pdf

Chapter 2 - 80C51 Family Programmer’s Guide and Instruction Set:
http://www.nxp.com/acrobat_d...UIDE_1.pdf

Chapter 3 - 80C51 Family Hardware Description:
http://www.nxp.com/acrobat_d...WARE_1.pdf

re ports there is a FAQ (look left)

Erik

List of 62 messages in thread
TopicAuthorDate
how can i use port 0 as output            01/01/70 00:00      
   read            01/01/70 00:00      
      not quite understand            01/01/70 00:00      
         READ            01/01/70 00:00      
            i'm blur            01/01/70 00:00      
               it is a \'1\', but not a \'high\'            01/01/70 00:00      
         Port 0 is open drain            01/01/70 00:00      
            connection between u-c with pull up?            01/01/70 00:00      
               Basics            01/01/70 00:00      
                  typo            01/01/70 00:00      
                     Doh!            01/01/70 00:00      
               The answer is...            01/01/70 00:00      
                  Sinking and Sourcing            01/01/70 00:00      
                     Correct!            01/01/70 00:00      
                  sending data using port 0?            01/01/70 00:00      
                     Yes            01/01/70 00:00      
                        LED display driver            01/01/70 00:00      
                           Port1 is better than port0 for this            01/01/70 00:00      
                              is it right like this?            01/01/70 00:00      
                                 NO            01/01/70 00:00      
                                 Where is the TB62726 in your circuit??            01/01/70 00:00      
                                    stiil stuck with port0            01/01/70 00:00      
                                       help me plz            01/01/70 00:00      
                                          drop the cute stuff            01/01/70 00:00      
                                    connections right or not?            01/01/70 00:00      
                                       Hallelujah!!            01/01/70 00:00      
                                          I already did            01/01/70 00:00      
                                          sorry            01/01/70 00:00      
                                       No            01/01/70 00:00      
                                 Looks like a point of confusion            01/01/70 00:00      
                                    It is not Right            01/01/70 00:00      
                                    Looks like total confusion!            01/01/70 00:00      
                                       looks like?            01/01/70 00:00      
                                    confused..            01/01/70 00:00      
                                       That is Right            01/01/70 00:00      
                                       the schematic is fine, BUT            01/01/70 00:00      
                                       You have damaged the micro!!            01/01/70 00:00      
                                    my assumption right now            01/01/70 00:00      
                                       basics            01/01/70 00:00      
                                          Deja Vu            01/01/70 00:00      
                                          Wyh not?            01/01/70 00:00      
                                             the difference is            01/01/70 00:00      
                                       See my recent post.            01/01/70 00:00      
                                          why not ?            01/01/70 00:00      
                                          No, you're wrong ...            01/01/70 00:00      
   Don't remove your earlier schematics!!            01/01/70 00:00      
      RightO            01/01/70 00:00      
         a good way to burn the port pin (and the LED)            01/01/70 00:00      
            Sorry Datasheet is different for what I am saying            01/01/70 00:00      
               NO, nada, niente, never, nie, non,, aldrig            01/01/70 00:00      
               Hair-raising...            01/01/70 00:00      
               Completely Incorrect!            01/01/70 00:00      
                  In practice..            01/01/70 00:00      
                     Please read specs properly            01/01/70 00:00      
                        What has survived your "tests" must be correct?            01/01/70 00:00      
      diagram attached            01/01/70 00:00      
         Connections are not correct!            01/01/70 00:00      
   Modifications            01/01/70 00:00      
      PWM without using 8051-Timer            01/01/70 00:00      
         New Topic; New Thread            01/01/70 00:00      
         Yes, but...            01/01/70 00:00      
         the usual question            01/01/70 00:00      

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