From: Jim Thompson
Subject: Re: Querry, Kick Starting Crystal Oscilator.
References: <3DCA905A.59FD928B@mmm.com.DELETETHIS> <3DCAE105.6CAAD7B9@mmm.com.DELETETHIS>
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Date: Thu, 07 Nov 2002 22:06:03 GMT
NNTP-Posting-Date: Thu, 07 Nov 2002 17:06:03 EST
Organization: Cox Communications
On Thu, 07 Nov 2002 15:54:13 -0600,
email@example.com (Roy McCammon),
In Newsgroup: sci.electronics.design,
Entitled: "Re: Querry, Kick Starting Crystal Oscilator.",
Wrote the following:
|Jim Thompson wrote:
|> On Thu, 07 Nov 2002 10:10:02 -0600,
|> firstname.lastname@example.org (Roy McCammon),
|> In Newsgroup: sci.electronics.design,
|> Article: <3DCA905A.59FD928B@mmm.com.DELETETHIS>,
|> Entitled: "Querry, Kick Starting Crystal Oscilator.",
|> Wrote the following:
|> |I've got a processor with a 32KHz crystal. The problem
|> |is that the crystal oscillator can take a l_o_n_g time
|> |to start and stabilize.
|> |My though is to build a 32KHz cmos schmidt trigger RC
|> |oscillator and feed that through a small capacitance into
|> |the input of the crystal oscillator to get it going.
|> |Any thoughts?
|> (1) Are you defining "start" from when you apply power?
|> (2) Post your schematic to A.B.S.E... it's probably a bias build-up
|Just looking at the specs on the processor.
|use this crystal in this circuit and wait this long).
Can you reference a processor data sheet?
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| Jim-T@analog_innovations.com Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
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