David Duffy (AVD) wrote:
> I'd like to make a programmable (serial control) oscillator as part of a=
=20
> test rig.
>
> All I need is square wave output (adjustable symmetry would be nice but=20
> not essential) and a frequency range of 0.1Hz to 20Khz or so. The area=20
> of interest right right now is more like 0Hz to 200Hz for simulating a=20
> pulse counting input to the device under test.
>
> I'm using a $100 function generator for now, but the display resolution=20
> of 1Hz is somewhat limiting.  PC control would also enable me to=20
> automate some of the testing.
> David..
What step size and accuracy do you need?

Can timer2 in a pic18 do what you need?
--=20
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