DESCRIPTION

Oscillator.

The output current at ROSC pin is mirrored to COSC pin with a proper direction according to its voltage slope.

The triangular wave form at COSC pin, being compared with a threshold, defines the PWM duty cycle at the motor driver output M+ and M-. The oscillator also supplies the time base for theswitch off and switch on delays and the Time Out

Counter. The typical oscillator period is: Tosc = 7.04 x Rosc x Cosc