bigal_scorpio
Active Member
Hi to all,
I just realised that though I have a few different Ceramic Resonators, I don't know how to use them!
I was pondering building a new PIC circuit and though I didn't have the correct value crystal I had a C.R of the correct value.
Then came the puzzle, I have always connected PICs the same way with crystals across Osc1 and Osc2 then grounding both through small caps.
Then I remembered reading that C.Rs don't need the caps that crystals need, so do I just connect the C.R across Osc1 and Osc2 and job done? Or do I need some other connection to the C.R?
Then it struck me that there are 2 pin and 3 pin versions of the C.R! Now I'm even more puzzled.
I tried Googling for an explanation but all I found was why one was better than the other and how they could soon both be replaced by something new (silicon oscillators)! Just something else to confuse me.
So can anyone tell me how to use C.Rs on a PIC explaining both 2 and 3 leg varieties? Or point me to a site that can?
Thanks for looking..............Al![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I just realised that though I have a few different Ceramic Resonators, I don't know how to use them!
I was pondering building a new PIC circuit and though I didn't have the correct value crystal I had a C.R of the correct value.
Then came the puzzle, I have always connected PICs the same way with crystals across Osc1 and Osc2 then grounding both through small caps.
Then I remembered reading that C.Rs don't need the caps that crystals need, so do I just connect the C.R across Osc1 and Osc2 and job done? Or do I need some other connection to the C.R?
Then it struck me that there are 2 pin and 3 pin versions of the C.R! Now I'm even more puzzled.
I tried Googling for an explanation but all I found was why one was better than the other and how they could soon both be replaced by something new (silicon oscillators)! Just something else to confuse me.
So can anyone tell me how to use C.Rs on a PIC explaining both 2 and 3 leg varieties? Or point me to a site that can?
Thanks for looking..............Al