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???
03/25/07 19:56
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#135842 - Clock out
I am building a system using the 89c51rd2 I need to connect 5 serial devices (digital weighing scales) so was planning to use the 8251a usart... the thing is that it requires a system CLK INPUT and there is no clock out provided by the controller... what should I do?? is there any other better peripheral available to connect serial 232 devices??

List of 16 messages in thread
TopicAuthorDate
Clock out            01/01/70 00:00      
   External oscillator            01/01/70 00:00      
      External oscillator            01/01/70 00:00      
         It depends on what's required            01/01/70 00:00      
            stand alone osc            01/01/70 00:00      
               Digikey            01/01/70 00:00      
   Timer 2 clock output            01/01/70 00:00      
      Timer 2            01/01/70 00:00      
   PCA output            01/01/70 00:00      
      Thanks!!! problem solved            01/01/70 00:00      
   Better peripheral            01/01/70 00:00      
      NXP has oodles and bunches of            01/01/70 00:00      
      16c550            01/01/70 00:00      
         does the 82xx thingy have 4 UARTS?            01/01/70 00:00      
         Look some more....            01/01/70 00:00      
            so obsolete that even DigiKey does not have it            01/01/70 00:00      

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