On Mon, Jan 30, 2017 at 04:15:11PM -0600, Michael Johnston wrote:
> Hi, I do a lot of point to point wiring for prototyping and I have a
> MAX3707 real time clock module.and it says in the data sheet that
> the 32 khz clock crystal must be qrounded some way. Can I wrap a
> piece of wire around the can a solder it to the ground leg coming
> out of my voltage regulator and achieve the ground for accurate
> timing?

Can't find a MAX3707 at Maxim, but my guess; the crystal is best
grounded to the chip, not to the distant regulator.

I recall we hit something like this at OLPC in an early board spin,
and I had to do some long term clock accuracy tests.

I've also heard of crystals soldered where ambient temperature
variation is high; to give thermal bonding to PCB.

--=20
James Cameron
http://quozl.netrek.org/
--=20
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