On Tue, 4 Jan 2000, Andreas Forsblom wrote:

> Could someone explain the difference between a normal 2 pin crystal,

2 pins. Very High Q (quality factor). Very accurate. Couple of $ cost.
Requires external gain stage to achieve oscillation.

>a  crystal oscillator

As the name says. Self contained oscillator. Supply power, get signal.
Many $ cost.

>and a resonator?

Uses a piezo electric material with less precise characteristics than the
quartz used in crystals. More robust, less accurate (few percent vs sub %),
much cheaper. Way under a $.

> Robert Rolf wrote:
> >
> > On Tue, 4 Jan 2000, Mike Harrison wrote:
> >
> > > Pin one is the 'pointy' corner, or one marked with dot on the top.
> > > Output may be cmos or TTL the former can be connected to PIC OSCIN
> > > pin, the latter may or may not have enough output to drive a PIC
> > > properly.
> >
> > However, if you add a 470 pullup to a TTL osc module output, it raises
> > Voh enough to work well.

Robert
--Robert.Rolf@UAlberta.ca
"If 'debugging' is the process of removing errors, then 'programming' must
be the process of putting them in".