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???
12/05/05 21:39
Modified:
  12/05/05 21:42

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#104739 - not very good
Responding to: ???'s previous message
Good solution of 80C51 RS232 problem.

not very good

states V= 3.3 to 5V

the datasheet for MAX232 states

VCC = 5V ±10%

Someone copied the SILabs devboards and sold the copies. There are several posts about them not working/being erratic all related to a MAX232 supplied by 3V3.

Erik

List of 21 messages in thread
TopicAuthorDate
serial communication tutorial            01/01/70 00:00      
   step by step '51 serial            01/01/70 00:00      
   Thanks, so did it happen?            01/01/70 00:00      
      use the 232 part of the sbc schematic            01/01/70 00:00      
      SBC RS232            01/01/70 00:00      
      max232 data sheet            01/01/70 00:00      
   Good solution of 80C51 RS232 problem.            01/01/70 00:00      
      More good solutions...            01/01/70 00:00      
         USB version            01/01/70 00:00      
            USB version - clickable            01/01/70 00:00      
      not very good            01/01/70 00:00      
   Many thanks, one last thing            01/01/70 00:00      
      did you hit ENTER key            01/01/70 00:00      
         now I have myself wondering..            01/01/70 00:00      
            Yes I did            01/01/70 00:00      
               Hyperterminal Settings            01/01/70 00:00      
      hyperterminal, setup            01/01/70 00:00      
         Yes it works like this            01/01/70 00:00      
            hyperterminal II.            01/01/70 00:00      
               LOVELY JUBLY            01/01/70 00:00      
                  buffers            01/01/70 00:00      

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