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From: oolidjr@hubcap.UUCP (Joe Moll)
Newsgroups: comp.sys.intel,sci.electronics
Subject: Re:2764A Query ...  Followup Article.
Keywords: Vpp, Vcc, Etc.
Message-ID: <1243@hubcap.UUCP>
Date: 29 Mar 88 07:44:04 GMT
Distribution: na
Organization: Clemson University, Clemson, SC
Lines: 43

Here's the followup article I promised.

First I'd like to thank those again whom I've already replied to by mail
for their help.  Although I was told that the chip was in the '85 Memory
components handbook, I couldn't find it in there.  I did, however, find
it in the '88 version of that manual that showed up here at school a few
days ago.  I'll just go through a few of the things that I was looking
for.

Since I'm building this EPROM burner as one of my senior projects, I
needed this info, and I know some of you other hardware hackers might
like a glance at it.

Intel Claims ....

180ns D2764A-1 (CerDip), 200ns P2764A-2 (plastic) are Intel Intelligent
Programming algorithm and Quick Pulse algorithm compatible.  This Quick
pulse algorithm looks pretty useful...  1 second to program and verify
the chip (providing your programming equipment can move that fast).  The
chip also has the Intelligent Identifier circuitry built in.

OKEY-DOKEY ...  Here are the programming voltages (Vpp and Vcc are at
5.0v for normal use) --

Quick Pulse :  Vpp -- 12.75v    Vcc -- 6.25v
Intelligent :  Vpp -- 12.5v     Vcc -- 6.0v

Intelligent Identifier :  Device 0x08  Manufacturer 0x88  (Plastic)
						    0x89  (CerDip)

Thanks Again for your help.

P.S.  Anyone have a pinout for a NEC 43256 32k x 8 Static RAM???

Thanks in advance for any help.

--Joe

-- 
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