For general purpose digital input/output pins the input voltage tolerance is 5v only if VDD>=2.4v
if VDD<2.4v then the input voltage tolerance is 3.6v.
What is the 2.4V means. Is that the controller input voltage or the reference voltage?
I have a ultrasonic sensor which will work on the input voltage of 5V. We have two pins(Trigger and Echo) . In these 2 pins the output voltage will be only 5V. Whether i can interface these pins with controller? Will it work?