[time-nuts] DS1620 Variants in the Thunderbolt

[Hal Murray]

heathkid at heathkid.com said:
> What is the higher resolution variant of the DS1620 and how can one tell the
>  difference from the chip markings?

It's in the archives, multiple times.  The only trick is to find one of them.

I started with >time-nuts DS1620 rev<

Try this:
  http://www.febo.com/pipermail/time-nuts/2009-July/039497.html

There is a picture here:
  http://www.febo.com/pipermail/time-nuts/attachments/20090726/2302a4b4/attach
ment.jpeg
It shows a "D" as part of the date/batch info.  I'd guess that's the rev of 
the chip.  (It's not covered in either of the data sheets that I have.)


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