2 Replies Latest reply on Feb 17, 2011 6:13 AM by udayan.umapathi

    I2C Slave pin assigment

    robert.seczkowski

      I have CY8CKIT-003. I2C Slave Spec says, there is any pin available for this function.

         

      I'm trying with pins P4[4]-SDA and P4[6} _SCL pins (according to example project).

         

      Psoc Creator however doesn't allow such assignment saying:

         

      "Error: apr.M0010: IO "SCL_S(0)" cannot be placed into "P4[6]" because the pin does not support the features required by the IO. (App=cydsfit)"

         

      As far as I figured out only hardware dedicated pins work (P12-0 and P12-1)

         

      And it's regardles of configuration (UDB nor Fixed FUnction)

         

      Does anyone know why?

         

      Template projects reccomends open drain low (can I use resitive pullup?)

         

      regards

         

      robert seczkowski