We use LP mode at 32KHz a lot. Have you considered the reliability of this
under varying humidity. You need to carefully consider how you protect your
PCB. We use 12pF both sides and keep all leads short.

James Wilson
mailto:jwilson@geminidataloggers.com


| -----Original Message-----
| From: Marc [mailto:marc@AARGH.FRANKEN.DE]
| Sent: 14 April 2000 02:09
| To: PICLIST@MITVMA.MIT.EDU
| Subject: 32khz osc problems
|
|
| Today I had an 32khz XTAL startup problem, that was obviously
| caused by a
| too small load capacitance.  For the product it is essential that the
| PIC always runs. Therefore I want to make further reliability
| tests with
| the XTAL and caps.
|
| What is the worst case condition for voltage and temperature,
| under which
| a marginally connected XTAL is most likely to fail?
|
| I have set the PIC to LP mode, if that matters.
|