Hi All,
I agree with you that 60% or more could be fit for using single PIC.
Real applications require more than one PIC by my point of view.
For example: Inductive heating require frequencies from 200 up to 500 KHz.
The first task is generating starting frequency 200 KHz.
Second one is increasing frequency up to resonance point slowly it mean that find
minimum current point and keep it near minimum.
Due to nature of metals that is changing its parameters resonance point will be moving
so increasing or decreasing frequency.
Third task is to send to LCD data about heating – temperature, frequency.
Fourth task is generate heat for specific period of time after temperature in
metal equal needed.
Fifth task is keeping cooling water flow and stop heating if water is not in system
(broken hose).
Sixth task is giving signal to robot to take detail off and put new one.
Seventh task is status of process indication by LED and sound.
So as you see it is not possible to use single PIC for these applications.
Process of heating has to be continuous without interruption otherwise
PIC will loose resonance point.
Before resonance point here is high current.
After passing resonance point current is increasing.
Resonance only has low current.
I can write examples of many applications that require 2 PICs not one.
Best Regards to All