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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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 Posted: Thu Sep 06, 2012 1:13 pm Post subject: Unknown EPROM |
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Hi guys,
I found this chip, but don't find out what is it...
Have you any idea? Thanks...
EDIT: type SM65364 printed
Last edited by JardaXor on Wed Sep 12, 2012 1:08 pm; edited 1 time in total |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Thu Sep 06, 2012 1:28 pm Post subject: |
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| Seems to be 1702A |
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Thu Sep 06, 2012 5:48 pm Post subject: |
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| Maybe, but I never seen this marking... |
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Sun Sep 09, 2012 11:47 am Post subject: |
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| Eh, after cleaning the number is complet - SM65364 |
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Wed Sep 12, 2012 1:06 pm Post subject: |
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Hello,
I have another strange chip I never seen before 
Looks like standard RF5 (old big die). |
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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 Sep 12, 2012 1:34 pm Post subject: |
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EL stands for Elorg - Soviet Union state export organization for electronics manufacturers.
EDIT:
Link shows collection of Elorg pocket calendars. There you can see punched paper tape Elorg logo often seen on chips made for export.
http://sfrolov.livejournal.com/83226.html |
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CPUShack
Joined: 16 Jun 2003
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Location: State of Jefferson, USA
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Wed Sep 12, 2012 2:24 pm Post subject: |
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Ufff, so quick reply... 
I tried to find it in Your collection, but no EL2716 there...
Your'e right, thank You for info.
Btw do You know this one from Germany? I think is little different from ususal package... |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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Piktscher
Joined: 13 Jun 2011
Posts: 275
Location: Germany
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| Posted: Wed Sep 12, 2012 2:52 pm Post subject: |
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| This is the first not imported housing for east german chips. IT was made by KWH (Keramische Werke Hermsdorf). The combination of the modern housing and the old chip is a bit strange. |
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Wed Sep 12, 2012 2:59 pm Post subject: |
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| CPUShack wrote: | | yah not as common, they made several EPROMs using it and similar (such as a U2716C35) |
But the zebra lines are more shaped than EPROMs You have on the site...
| Piktscher wrote: |
This is the first not imported housing for east german chips. IT was made by KWH (Keramische Werke Hermsdorf). The combination of the modern housing and the old chip is a bit strange. |
Exist any list of produced packages? |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Thu Sep 13, 2012 12:40 am Post subject: |
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| I have to make better picture, but diferences are visible well... |
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CPUShack
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Location: State of Jefferson, USA
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