4200-L, Power-efficient GPIO configuration (IRQ+Wake-support) | Cypress Semiconductor
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.