I'm trying to figure out the load capacitance of the oscillator pins 6
and 7 on the SA602A. I've got a 14.85MHz fundamental crystal with a
specified load capacitance of 13pF running about 1300Hz slow (with
27+22p). The datasheet doesn't say much about the oscillator pins.

The best hint I've found is about the SA605:

From AN1994 about the SA605:

Because the Colpitts configuration is for parallel resonance
mode, it is important to know, when ordering crystals, that
the load capacitance of the SA605 is 10pF.

That would suggest I'm way, WAY off, and my external load capacitors
should only amount to 3p!

The SA612A datasheet has an example where it specifies the crystal load
capacitance, but then it doesn't specify C1/C2 values. Then it has
another example with specific values for C1/C2 (which are 4.5p in series)
but does not mention the load capacitance of the 3OT crystal. One at
that freq made by CTS has a load capacitance of 13p, which would suggest
that the oscillator is about 8.5p. The 602A has a similar example with
another unspecified crystal...

--
Ben Jackson AD7GD

http://www.ben.com/