Is Zero frequency usually considered to be outside the manufacturer's
specifications?

--Lawrence

----- Original Message -----
From: "Brendan Moran" <annirak@BIGFOOT.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Friday, June 14, 2002 11:42 AM
Subject: Re: [PIC]: Will an unprogrammed chip oscillate?


> Quite right.  I misread that I guess
>
> "The PIC16F87X oscillator design requires the use of a parallel
> cut crystal. Use of a series cut crystal may give a
> frequency out of the crystal manufacturers specifications."
>
> Regards,
>
> --Brendan
>
>
> ----- Original Message -----
> From: "Pic Dude" <picdude@AVN-TECH.COM>
> To: <PICLIST@mitvma.mit.edu>
> Sent: Friday, June 14, 2002 9:07 AM
> Subject: Re: [PIC]: Will an unprogrammed chip oscillate?
>
>
> > Isn't it the other way? -- that the Microchip docs state that
> > a PARALLEL-cut crystal is required as a series cut may cause
> > incorrect timing?
> >
> > Cheers,
> > -Neil.
> >
> >
> >
> >
> > -----Original Message-----
> > From:
> > Sent: Friday, June 14, 2002 9:47 AM
> > Subject: Re: [PIC]: Will an unprogrammed chip oscillate?
> >
> >
> > Series cut .. Parallel cut - How does one figure out which applies to
the
> > crystal in question. I just looked at EVERY crystal in Digikey, and NONE
> > (i.e. diddlysquat, Nada, Nichts, Nyet, Zip, Zilcho) specify whether the
> > crystal is parallel or serial cut. Now there are a few that allude to
> > "When run in parallel mode.." "Effective series resistance" And one has
a
> > whole paragraph of rubber language which basically says "Your Mileage
May
> > Vary" when run in parallel or series mode, but none of them just come
> right
> > out and say one or the other.
> > I guess the correct method is to use a CRYSTAL ball. <Groan>
> > --Lawrence
> >
> > ----- Original Message -----
> > From: "Brendan Moran" <annirak@BIGFOOT.COM>
> > To: <PICLIST@MITVMA.MIT.EDU>
> > Sent: Thursday, June 13, 2002 5:33 PM
> > Subject: Re: [PIC]: Will an unprogrammed chip oscillate?
> >
> > --
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> >
> >
>
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