Article View: comp.sys.nsc.32k
Article #972Re: How does the Dallas Semiconductor chip retain the time?
From: George Scolaro
Date: Wed, 29 May 1991 15:12
Date: Wed, 29 May 1991 15:12
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[In the message entitled "How does the Dallas Semiconductor chip retain the time?" on May 27, 15:27, Jordan K. Hubbard writes:]
>
> Not having any specs on my chip (I got it from Steve Liggett), I was
> wondering..
>
It does use a lithium battery. As per most lithium batteries that are drained
at leakage current levels, the lifetime is a nominal 10 years. Either that or
it has a non-volatile time offset which it then applies to the time value it
obtains from WWV (US standard time transmissions) via its tiny radio
receiver :-)
P.S. Congrats on fixing your broken traces...
best regards,
--
George Scolaro
george@wombat.bungi.com [37 20 51 N / 122 03 07 W]
--
Dave Rand
{pyramid|mips|bct|vsi1}!daver!dlr Internet: dlr@daver.bungi.com
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!zaphod.mps.ohio-state.edu!mips!daver!wombat.bungi.COM!george@wombat.bungi.COM From: george@wombat.bungi.COM (George Scolaro) Newsgroups: comp.sys.nsc.32k Subject: Re: How does the Dallas Semiconductor chip retain the time? Message-ID: <9105290812.AA05238@wombat.bungi.COM> Date: 29 May 91 15:12:14 GMT Sender: dlr@daver.bungi.com (Dave Rand) Reply-To: pc532@bungi.com Organization: Association for the Prevention of Polar Bears and Kangaroos Lines: 23