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'Recommended oscillator'
2003\04\17@140946 by Josh White

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Hello everyone,

I am fairly new at this.  I want to use a PIC16F84A using a 20MHz
oscillator.  The oscillator needs to be pretty accurate so I think I will
need a crystal.  Do you have any recommendations what kind/manufacturer/ect
that I should use.  Part numbers would help me out a lot.  Thanks.

--------------------------------------------
Joshua Melbourne White
Vice Chair
NCSU Student Chapter of IEEE
Treasurer
Eta Kappa Nu, Beta Eta Chapter
North Carolina State University
Electrical and Computer Engineering
--------------------------------------------

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2003\04\17@153823 by Larry Bradley

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Use a 20 mhz parallel cut xtal - Digikey part number X439-ND $0.58 each.

You also need a couple of 18 or 20 pf capacitors.

By the way, if you haven't gone and bought the 16F84A yet, I suggest you
get the 16F628 instead - it is cheaper and has a lot more features, such as
builtin USART for serial I/O, analog comparator, more RAM ...

Larry

At 02:08 PM 4/17/2003 -0400, you wrote:
{Quote hidden}

Larry Bradley
Orleans (Ottawa), Ontario, CANADA

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2003\04\18@183333 by Chuck Rice

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Ahh, NCSU my old alma mater. I would recommend Digikey part number
X909-ND. That's a 20MHz ceramic resonator with built in capacitance.

They are quite rugged, with strong pins that fit easily into sockets.
You'll have to put it in sideways of course because of the grounding
pin. That's how we did our project for Sutton's class. I assume that's
what this is for? ;)

Incidentally, you are aware there is a part's shop on campus where you
can get most of this stuff for free right? Assuming it is for a class.
Reply to me via email if you would like details. (spam_OUTChuckPLTakeThisOuTspamcomcast.net)

Hope this helps,

-==-

{Original Message removed}

2003\04\18@212618 by Josh White

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Yeah, I am taking senior design and I am using a PIC for my project.  The
parts shop at State only had 8 to 10 MHz oscillators on hand, thats why I am
looking from a 20MHz one.  Thanks for the advice.

--------------------------------------------
Joshua Melbourne White
Vice Chair
NCSU Student Chapter of IEEE
Treasurer
Eta Kappa Nu, Beta Eta Chapter
North Carolina State University
Electrical and Computer Engineering
--------------------------------------------


{Original Message removed}

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