Back when I was having trouble with ECS through hole resonators with
built in caps, I called them to see what could be done. They said that as
long as the part worked in their sample circuit (a cmos inverter
oscillator circuit), the part was fine and the problem was on my end (ie,
the PIC and my two very short traces). We then designed in the murata.
This, again, was at 16 MHz on a 16c74. ECS seems fine at 4 and 10 MHz,
just not 16 on a PIC.

Harold


On Thu, 27 Jun 2002 14:39:07 -0400 "Eisermann, Phil [Ridg/CO]"
<peiserma@RIDGID.COM> writes:
> Mouser carries murata, so does Pioneer (i think).
>
> I've had one experience with ECS. It was a SMD crystal
> (ECS-SR1-4.00-B) on a
> PIC711 and PIC715. It failed to work at temperatures higher than 30C
> (thats
> around 86F). They confirmed that it would not work, unless i
> purchased one
> without caps, and added caps myself. Sort of defeats the purpose of
> built-in
> caps. I replaced it with a murata part. That one worked up to at
> least 120C.
> My wire insulation was starting to soften at that point, so we did
> not go
> any higher
>
> Both resonators workd down to at least -60C. it might have been the
> resonator or the PIC that stopped working at that point.
>
>
> Phil Eisermann
> Electronics Engineer
> The Ridge Tool Company
> (440)329-4680
>
>
> > -----Original Message-----
> > From: Alan Shinn [mailto:alshinn@MINDSPRING.COM]
> > Sent: Thursday, June 27, 2002 3:23 PM
> > To: PICLIST@MITVMA.MIT.EDU
> > Subject: [PIC]: Digi-Key Ceramic Resonators
> >
> >
> > Pardon me if this is a re-send.
> >
> > Digi-Key sells a ZTT series 4 mHz ceramic resonator (through
> > hole) with
> > built in caps for $0.68 ($.45 in 100s).
> > Does anyone have experience with these? Do they seem to work as
> well
> > with (say) PIC16F84A or 16F628 as the much acclaimed (and
> > characterized
> > for PIC) Murata devices.
> > The reason I ask is that I don't know where to get the Murata
> > parts nor
> > what to order, Digi-Key is easy.
> >
> > They also have a surface mount  ECS-SRA-B series. Same question??
> > --
> > Looking forward:
> > Alan Shinn
> >
> >
> > Experience the
> > beginnings of microscopy.
> > Make your own replica
> > of one of Antony van Leeuwenhoek's microscopes.
> > visit    http://www.mindspring.com/~alshinn/
> >
> > --
> > http://www.piclist.com hint: The list server can filter out
> subtopics
> > (like ads or off topics) for you. See
> http://www.piclist.com/#topics
> >
> >
>
> --
> http://www.piclist.com hint: The list server can filter out
> subtopics
> (like ads or off topics) for you. See http://www.piclist.com/#topics
>
>

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