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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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 Posted: Sat Sep 17, 2011 9:23 pm Post subject: Intel 1701 & 1702 eprom dies |
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Its unlikely I will ever manage to end up with a Intel 1701 & 1702 eprom, so I thought it best to ask around.
What I am looking for is hi-res pics of dies from marked 1701/C1701 & 1702/C1702 eproms to finally see if the difference between the 2 is visible rather than by testing.
| Quote: | The 1601 and 1701 is operable in both the static and dynamic mode while the 1602 and 1702 is operable in the static mode only.
The Dynamic mode of the 1601/1701 and 1301 refers to the decoding circuitry and not the memory cell. |
Hi-res photos could stitched or unstitched microscope pics or maybe even pics from digital camera with a high optical zoom
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wepwawet
Joined: 18 Mar 2004
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Location: Seligenstadt - Germany
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| Posted: Sun Sep 18, 2011 10:31 am Post subject: |
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I'll do some pics with my 200x usb microscope when I am back home.
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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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| Posted: Sun Sep 18, 2011 11:22 pm Post subject: |
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cheers mate 
to save you some time I am mainly interested in the decoding circuitry, so I don't require any images of the memory cell area
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Sun Sep 18, 2011 11:52 pm Post subject: |
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| Neon_WA wrote: |
... I don't require any images of the memory cell area |
Ya' never know if they're different, so better count them  |
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jrmunro
Joined: 01 Feb 2003
Posts: 3149
Location: Vancouver, Canada
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| Posted: Mon Sep 19, 2011 1:17 am Post subject: |
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So the blank eproms that have 1601 on the die could be
C1701 or 1702 without the "C" |
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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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| Posted: Mon Sep 19, 2011 1:22 am Post subject: |
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could be 1701, C1701, 1702 or C1702
the decoding circuit is supposedly different between 1701 & 1702 but not sure to what extent.
It could be only a few transistors 
here are the 2 packages that the blank eproms with 1601 dies came in
thou package is not a good indication of part number
only C1701, 1702 & C1702 have been found in the left package so far
and only C1701 & C1702 in the right package so far
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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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| Posted: Mon Oct 03, 2011 9:39 pm Post subject: |
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after a bit of reading, this is the area I am most interested in first
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Riviera
Joined: 03 Feb 2003
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Location: Sweden
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| Posted: Fri Oct 07, 2011 6:00 pm Post subject: |
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The 1702 I have is marked 1601 on the die.
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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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| Posted: Sun Oct 09, 2011 9:12 am Post subject: |
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| Riviera wrote: | | The 1702 I have is marked 1601 on the die. |
Both 1701 & 1702 have dies marked 1601
I was thinking there was a physical difference.. but now I am guessing after testing Intel decided which were to be marked 1701 and which were marked 1702
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Chiefish
Joined: 23 Sep 2007
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Location: Northwest N.J. U.S.A
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| Posted: Sun Oct 09, 2011 10:12 am Post subject: |
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Take a look at this thread, I shot some markings on some different 1701 and 1702s.
http://www.cpu-world.com/forum/viewtopic.php?t=13032
I see if I can get some overall dies shots and post them up for you.
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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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| Posted: Sun Oct 09, 2011 6:14 pm Post subject: |
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| Chiefish wrote: | | I see if I can get some overall dies shots and post them up for you. |
any good pics of marked 1701s or 1702s would be greatly appreciated
well I decided to go directly to the source and contact Dov Frohman
this was his response to my question about the difference for the 1601/1701 & 1602/1702 dies
If I remember correctly, the only difference between the 1601 and 1701 is that the first had a sealed lid (to be erased by X-Rays)
and the second had a quartz window (to be erased by UV) with no difference between the die.
Actually within a short period of time and certainly by the end of 1972 only the UV erasable static mode (1702) was sold.
The 1701 and 1702 die are identical, the only difference you may see in high resolution is in the metal interconnection pattern in the decoder area.
Dov
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Neon_WA
Joined: 08 Nov 2008
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| Posted: Wed Feb 15, 2012 12:37 am Post subject: |
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a better single shot of a 1601 die used in the 1601 - 1702
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Robev
Joined: 10 Mar 2006
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| Posted: Wed Feb 15, 2012 5:40 am Post subject: |
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Thats a neat Piccy 
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