Post by thread:Series of PICS

I have a project using up to 20 16F84's on one board. I would prefer to clock all from one source. Should I have a separate Xtal oscillator, and buffers, to all? Or, can I use the clock from the first PIC, and buffer to the rest? Suggestions would be welcome and appreciated. Regards Howard

Howard, This spring I finished a project involving 8 PIC16C63. They are all connected to the same ceramic oscillator with built-in caps like this: The oscillator to PIC in the usual way and then from the first PIC's osc2 pin to the next PIC's osc1 pin through a 10nF cap. A few devices have been used since May 99 and they all work great. The only problem I found at that time was that the distance between the PICs was a problem. The device runs from 3.3V and the ceramic oscillator was a 4MHz one from Murata. /Niklas CarlŽn >I have a project using up to 20 16F84's on one board. >I would prefer to clock all from one source. >Should I have a separate Xtal oscillator, and buffers, to all? >Or, can I use the clock from the first PIC, and buffer to the rest? >Suggestions would be welcome and appreciated. >Regards Howard