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cedrik
Joined: 16 Oct 2011
Posts: 2008
Location: Rom�nia
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 Posted: Tue Dec 18, 2012 2:56 pm Post subject: MEV chips (?) |
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I have this chips... and i couldnt find any info about them... never heard of MEV before... can anybody help with some infos plz? if anyone is interested 3 are for sale (i want to keep one 7641 and one 7641A )
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Wed Dec 19, 2012 1:39 am Post subject: |
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| They are Hungarian made, don't know if MEV is the same as Tungsram or not. |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Wed Dec 19, 2012 8:59 am Post subject: |
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Just noticed, some of them are 7641 PC and some are 7641A PC.
Could they be copies of Motorola 512x8 PROM's MCM7641(A)PC?
Motorola datasheet is here: http://www.datasheetarchive.com/MCM7641APC-datasheet.html
Last edited by Elar on Thu Dec 20, 2012 1:07 pm; edited 1 time in total |
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olliisit
Joined: 28 Feb 2006
Posts: 9
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picur10
Joined: 22 May 2006
Posts: 1229
Location: Budapest, Hungary
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| Posted: Thu Dec 20, 2012 6:31 pm Post subject: |
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| Elar wrote: | | They are Hungarian made, don't know if MEV is the same as Tungsram or not. |
If I know well then MEV (Mikroelektronikai Vállalat - Microeletronics Company) was founded by outsourcing the IC development from Tungsram in 1982. In 1986 the whole factory is destroyed by a fire in very suspicious conditions.
HERE is a (google) translated article about the fire, I hope that's remain readable. |
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