Hello,

The center lead on the resonator should be connected to VSS.  The two outer
leads are connected to OSCIN and OSCOUT on the PIC.  Some resonators have
the capacitors built in and some require external capacitors.  I would
recommend using the ones with built in caps.  Hope this helps.

>Hello,
>
>I have a Murata 4MHz ceramic resonator, possibly type number CST4.00MGW.
> It has three leads, it is blue, and has the marking 4.00 M Y on one
>side (the M is the Murata logo, in a circle).  I had the data sheet, but
>I am afraid it made no sense to me, and I was hoping to use this
>resonator on a PIC'84/04.  I assume I connect one lead to OSC out, one
>to OSC in, and one to ground. The data sheet seems to suggest I need
>some capacitors as well (as I would if I used a crystal), but I was
>hoping that all I needed was the resonator.
>
>Sorry the details are a bit sketchy, any clues?
>
>Andy
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