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08/12/05 14:33
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 		 #99279 - cable
Responding to: ???'s previous message
Problems with ISP-UART (usually related to AT89Sxxxx devices) have been discussed many times here - try searching the Forum. A couple of weeks ago, Charles Bannister initiated a discussion on how to make this kind of "cables" properly.

The most common problem with this type of "cables" is signal distortion on long cables, and crosstalk between adjacent wires in cable (mainly producing "false clocks"). If this is the case, shorten the cable (to say 15cm on each side of "circuit") and if you are using flat cable, arrange it so that there is a GND line between each signal line.

Jan Waclawek



List of 45 messages in thread
TopicAuthorDate
AT89S52 and ISP cable            01/01/70 00:00      
   Why do so many rely on Joe Blows posting            01/01/70 00:00      
      sorry, sir            01/01/70 00:00      
         Programmers are not "forgiving" they mus            01/01/70 00:00      
            all right            01/01/70 00:00      
         cable            01/01/70 00:00      
   Doubts...            01/01/70 00:00      
      yes, there are many differents!            01/01/70 00:00      
         again follow the recipe to the letter an            01/01/70 00:00      
            thank you sir!            01/01/70 00:00      
               oscilloscope            01/01/70 00:00      
               Some help...            01/01/70 00:00      
                  Read these articles            01/01/70 00:00      
   Try this Circuit and software. Its good            01/01/70 00:00      
      but            01/01/70 00:00      
         100uF?            01/01/70 00:00      
            BOTH            01/01/70 00:00      
   Back to the future            01/01/70 00:00      
      Cultural background             01/01/70 00:00      
         DeLorean            01/01/70 00:00      
            Buy a lowcost programmer from KDI            01/01/70 00:00      
               Not ISP!            01/01/70 00:00      
                  better than ISP for Adam            01/01/70 00:00      
                     anything is better than than a hand made            01/01/70 00:00      
                     None-Sense !            01/01/70 00:00      
                        NOPE            01/01/70 00:00      
                           You're quite right            01/01/70 00:00      
                        Just a newbie needs the right stuff!            01/01/70 00:00      
                           there would be someways            01/01/70 00:00      
                        nonsense            01/01/70 00:00      
                           not quite what you understanded            01/01/70 00:00      
                              Understanded!!! (you mean understood?)            01/01/70 00:00      
                              Excellent post !            01/01/70 00:00      
                                 Any time            01/01/70 00:00      
               lowcost            01/01/70 00:00      
                  lowcost            01/01/70 00:00      
                     and it takes 400 amps to power a '51            01/01/70 00:00      
                        400 amps            01/01/70 00:00      
                           Viking boat            01/01/70 00:00      
                           of course not but it is equally riduicul            01/01/70 00:00      
                              Viking boats            01/01/70 00:00      
                                 it would be nice to know what you were t            01/01/70 00:00      
   The problem is the printer,.            01/01/70 00:00      
   EaseMicro51            01/01/70 00:00      
   thank you very much!            01/01/70 00:00      

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