Dallas DS1243Y help

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Article #16083

#16083

From: Jim Griggers
Date: Sat, 29 Jun 1991 20:53

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Does anyone have experience interfacing the Dallas DS1243Y?  It is a 64K bit
NVRAM with a phantom clock.  I have checked out everything I know, and I still
can not access the clock.  I have double checked the access code and the
data that I send, but I get no responce.  The RST/ line is high.  Reading
and writing to the NVRAM part seems to be working fine.  The DS1343Y is
connected to an 80C31B data bus, address bus, and its chipselect is generated
from A13-A15 & RD/+WR/.  WR/ goes to 80C31 WR/, OE/ goes to 80C31 RD/.

Any pointers would be welcome.  Thanks.


     Jim Griggers                 * * * * *  my punctuality is well known,
     jdg@ncrmud.Columbia.NCR.COM   *     * when the revolution takes place,
     408 Timber Ridge Dr.           *   * i'll be late and i'll be shot
     West Columbia, SC             * * * as a traitor...
     29169                        *   * -the sugarcubes

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!samsung!emory!hubcap!ncrcae!ncrmud!jdg
From: jdg@ncrmud.Columbia.NCR.COM (Jim Griggers)
Newsgroups: sci.electronics
Subject: Dallas DS1243Y help
Keywords: access
Message-ID: <477@ncrmud.Columbia.NCR.COM>
Date: 29 Jun 91 20:53:36 GMT
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Lines: 17