Does anyone know the angular deflection limits of the longitudinal (pitch) and lateral (roll) axis of Airbus's side-stick?
From this site:
So max deflection in pitch is +/- 16 deg, in roll it is +/- 20 deg
There is a rather quick YouTube video by a gentleman called Capt. Joe which can partially answer your question.
The limits of the effective deflection of the sidestick is presented on the PFD, which that also changes with many variable factors to allow the aircraft to operate within its approved and safe performance envelope.