3 Replies Latest reply on Sep 21, 2016 12:43 AM by JoMe_264151

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




      Using CY8C4247BZI-L479, I assume it's possible


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

      • 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