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From: davidc@vlsisj.VLSI.COM (David Chapman)
Newsgroups: sci.electronics
Subject: Re: OTP (really?) EPROMS
Keywords: EPROMS X-rays
Message-ID: <15363@vlsisj.VLSI.COM>
Date: 17 Oct 89 01:49:16 GMT
References: <841@dms.UUCP> <1989Oct13.232523.3999@sj.ate.slb.com>
Reply-To: davidc@vlsisj.UUCP (David Chapman)
Distribution: usa
Organization: VLSI Technology Inc., San Jose, CA
Lines: 19

In article <1989Oct13.232523.3999@sj.ate.slb.com> jones@bach.UUCP (Clark Jones) writes:
<In article <841@dms.UUCP> albaugh@dms.UUCP (Mike Albaugh) writes:
<>	Suppose for the sake of argument that somebody had access to
<>a fair number of "One Time Programmable" EPROMS that were already
<>programmed. Is there a way (like, f'rinstance X-rays) to erase them
<>anyway? 
<
<Personally, I wouldn't use an x-ray erased EPROM in any system where future
<reliability was of _ANY_ consequence, such as in a game cartridge to be
<sold.

X-rays shouldn't be a problem; they're simply more energetic photons than
the UV you normally use to erase an EPROM.  Maybe you could call Intel (or
any of the other EPROM vendors) and ask.
-- 
		David Chapman

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