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mikee

20 mHz clock Module vs crystal.

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Hello all you mad crazy midiboxers.

 

I am about to build a circuit which needs two pic chips: one for a MB64 and one for a midi filter (by TK). Both chips are the same (old Pic16f877a - because I have some).

 

Both circuits work fine with their own crystal osc, but I consider this a bit wasteful, and anyway, I have a 20mHz module I have been meaning to press into service for some years.

 

I intend to drive both chip clock input pins "OSC1/CLKIN" from the single output of a TTL clock module (because I have one). The other clock pin "OSC1/CLKOUT" on each chip will be left open. I assume the relevant config bits will remain unchanged as 'HS'.

 

I would appreciate any comments regarding the above.

 

Thanks for looking.

 

Best regards to all.



edit: moot point, but I should have written MHz.

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I built the circuit, and used a module to drive three Pics, config is HS, not one problem found.

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thanks for the reply my friend

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