1 Reply Latest reply on Nov 14, 2016 11:48 AM by user_342122993

    bidirectional psoc4 pins

    glenn-edgar_1523231

      I need to interface with one wire and pseudo one wire devices.  I believe that if the pin is configured to bidirectional open drain with drives low option will work.  

         

      The one wire devices require a 5Kohm pull up resistor.  Is it possible to configure the bidirectional pin with the pull up resistor option?

         

       

         

      The second part of the question is about switching the port from output mode to read mode.  

         

      1.  For the host to assert a low write a 0 to the pin.

         

      2. To write a 1 or release the bus for read mode write a 1 to the pin.

         

      Is this correct?

         

      Thanks 

         

      Glenn