brightjoey
New Member
I'm having trouble understanding this particular phrase in this Ultrasonic Sensor PIC Programming guide pdf file in page 8 of 12.
I assume it means the oscillator that is inserted in the PIC. But I still don't get "crystal" and the whole phrase. ><
Note - assumes a 20MHz crystal, which is 5MHz timer clock
// A 1:4 prescaler is used to give a 1.25MHz timer count (0.8uS per tick)
I assume it means the oscillator that is inserted in the PIC. But I still don't get "crystal" and the whole phrase. ><