[sdiy] dsPic timers and OC assignments!

[Tom Wiltshire]

On 6 Jan 2010, at 17:50, karl dalen wrote:

> Is it possible to get TMR 4 and 5 assigned to a OCM output on 28pin  
> devices?

I don't think so. The datasheet for the 28-pin 33FJ128GP802 clearly  
says:

"The Output Compare module can select either Timer2
or Timer3 for its time base."

That's a cunning Microchip way of saying "not Timer 1, 4 or 5".

> I get the impression its not possible since the 4 OCM's can only use
> TMR2 or 3 to compare to so one are stuck with either 4 PWM's or
> TMR2 and 3 assigned to a OCM for toggling port bits?
>
> What a drag, please tell me i'm wrong!

The 28-pin DIP package is great, but the limited number of pins often  
means that you're left having to choose between one feature or  
another. There simply aren't enough pins available to use even half  
of them.

T.