Newsgroups: comp.robotics
Path: brunix!uunet!cs.utexas.edu!uwm.edu!caen!batcomputer!munnari.oz.au!bunyip.cc.uq.oz.au!s1.elec.uq.oz.au!ward
From: ward@s1.elec.uq.oz.au (Thomas Ward)
Subject: Re: Help ! - 68705R3 Tech Problems
Message-ID: <C7oBuq.BE2@bunyip.cc.uq.oz.au>
Keywords: 68705
Sender: news@bunyip.cc.uq.oz.au (USENET News System)
Organization: Dept. of Elec. and Comp. Engineering, Uni of Queensland
References:  <C7LwrD.5BH@bunyip.cc.uq.oz.au>
Date: Thu, 27 May 1993 07:08:50 GMT
Lines: 16

The problem was that the XTAL to GND capacitor was actually 220pF
rather than 22pF (who looks silly now?)  This caused the on-chip oscillator
to collapse after a few dozen clock cycles.
(I thought that '220' on the case meant 22 * 10^0 = 22pF (like '104' means
10 * 10^4 pF i.e.  .1uF] but it was really 220pF instead!)
Problem Solved.


Thanks to all who mailed me ...



Tom Ward



