Subject:
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Re: (Handy-B) wrong connection...
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 6 Dec 1996 20:04:55 GMT
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Original-From:
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Fred G. Martin <FREDM@MEDIA.nomorespamMIT.EDU>
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Viewed:
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1597 times
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> to solve the problem. I am thinking of replacing the (memory) IC with
> written on it : MCM60L256AP10 ZQQAG8841
> By which type can I replace it; by any 32K battery-backed CMOS static RAM
> or is the pinconfiguration non-standard?
any normal cmos low power 28-pin (JEDEC standard) 32K RAM will work.
You do not need a special battery backed variety.
you also might have blown the 'hc373 chip, since that is part of the
memory circuit. also check the 'hc132. hopefully the 'hc373 is ok
since that one is hard soldered down. at least your cpu is
functioning, as evidenced by the download software "working."
-fred
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Message is in Reply To:
 | | (Handy-B) wrong connection...
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| Hello, I made a terrible mistake. By mistake I connected the pos. side of the powerheader (10 V) to the middle row of the digital ports (Vccc ; 5 V , (if I'm not mistaking)). With this action I probably blew up (a) component(s) on my handyboard. I (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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