I have not done any robotics & I need a motor for a project I'm doing. The FS90R motor will probably suffice, but I'm puzzled by the data sheet below. It uses PWM to control the speed & direction of rotation as can be seen in the data sheet. It gives Pulse width range, Pulse width, Dead band range & Rotation direction. But I can't see what the period of the PWM signal should be. Any assistance will be appreciated.