I was using it as a digital input and using the interrupt as suggested by the earlier answers.
I'm not sure if the chip you're looking at would remove the need for another components as I have no experience with them.
For me a 2 resistor voltage divider and a zener to protect it from over voltage seemed like the simplest option.
I imagine that if I ever finish the project and make up a board it would save a ton of space as well!
Easty.