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Kai Klaas
11/20/08 06:51
Modified:
  11/20/08 07:10

Read: 2165 times
Germany


 
Msg Score: +1
 +1 Good Question
#160152 - Why not using an ADC with a real ...
Responding to: Chaitanya Thummar's previous message
... microcontroller/microprocessor interface?

How do you want to "read" the ICL7135 by the microcontroller? By reading the D1-D5 and B1-B8 pins in free running mode of ICL7135? Then, take care, there's no timing specifications in the datasheet. Nothing about setup and hold times, so you don't really know when to sample the B1-B8 lines. The /strobe line could be used, though. Give it to a free /INT input of your micro and code a little interrupt service routine, which reads the D1-D5 and B1-B8 lines whenever an active /INT line is detected.

Don't forget to read the polarity and overrange pins, too.

Kai

List of 12 messages in thread
TopicAuthorDate
Interfacing OF ADC ICL7135      Chaitanya Thummar      11/19/08 22:58      
   How to interface anything to anything else        Andy Neil      11/20/08 01:13      
   Why not using an ADC with a real ...        Kai Klaas      11/20/08 06:51      
      ADS7816 is much better      John Smith      12/06/08 04:41      
         Hardly...      Kai Klaas      12/06/08 07:04      
         Let him do his assigned task.      Richard Erlacher      12/06/08 10:06      
            We don't know that      Andy Neil      12/06/08 11:40      
               That is never the correct answer, though.      Richard Erlacher      12/06/08 16:34      
                  probing questions are often preferable      Andy Neil      12/06/08 17:14      
                     That is not the right sort of quesiton either      Richard Erlacher      12/06/08 22:34      
               Almost never a best.      Per Westermark      12/06/08 16:34      
   Why not search first?      Richard Erlacher      12/06/08 10:03      

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