1 x external crystal oscillator for multiple PICs

Hi,

As I have some problems using multiple 16MHz crystal (and PLLx4 enabled) on 5 pics,

I plan to use 1 x external crystal oscillator @ 64MHz with multiple pics (without PLL) in //

Where can I find connection examples ? (using buffers ?) Is there any problem to do it ?
Do you know some oscillators references that are the most easy to connect ? (digikey/mouser...)

Regards

Quote:

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Originally Posted by harryweb

Hi,

As I have some problems using multiple 16MHz crystal (and PLLx4 enabled) on 5 pics,

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What problems are you having? Post your code with your config settings. It is not that hard to make the PLLx4 to work.

Robert

You might also look at some previous posts on the subject as here: http://www.picbasic.co.uk/forum/showthread.php?t=575

Choose an oscillator module rather than a crystal. They are capable of driving multiple loads without buffering. 5 is getting near the limit, but should be fine.

You can find your answer in the Microchip midrange manual ...
DS31002A-page 2-11

and also probably in the relevant Pic datasheets ... oscillator section.

also add interesting readings ...

• AN826, “Crystal Oscillator Basics and Crystal Selection for rfPIC® and PIC® Devices” (DS00826)

• AN849, “Basic PIC® Oscillator Design”(DS00849)

• AN943, “Practical PIC® Oscillator Analysis and Design” (DS00943)

• AN949, “Making Your Oscillator Work” (DS00949)

Alain