3 Replies Latest reply on Sep 21, 2016 12:43 AM by user_1377889

    4200-L, Power-efficient GPIO configuration (IRQ+Wake-support)

    user_247090680

      Hi,

         

      Using CY8C4247BZI-L479, I assume it's possible

         

      I'm planning to use 56 gpio inputs from various buttons & external signals.
      Requirements:

         
            
      • any gpio must be able to wake from "deep sleep" (preferably hibernate and stop-mode as well)
      •     
      • gpio's should be completely interrupt-driven in run-time (as well as the requirement from sleep above)
      •    
         

      I need some input on best practice and if someone knows how the "Interrupt Source Multiplexer" works behind the scenes, in sleep and if it draws any extra/considerable amount of power.

         

       

         

      best david