www.photomacrography.net :: View topic - Intel wafer. CPU?
www.photomacrography.net Forum Index
An online community dedicated to the practices of photomacrography, close-up and macro photography, and photomicrography.
Photomacrography Front Page Amateurmicrography Front Page
Old Forums/Galleries
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Intel wafer. CPU?

 
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Technical and Studio Photography -- Macro and Close-up
View previous topic :: View next topic  
Author Message
Beatsy



Joined: 05 Jul 2013
Posts: 1392
Location: Malvern, UK

PostPosted: Sat Jun 16, 2018 3:56 am    Post subject: Intel wafer. CPU? Reply with quote

I've just got hold of a 6-inch Intel wafer from when 1 micron processes were the general state of the art (1986). That's just about the right scale for testing resolution and sharpness in the macro to extreme macro ranges IMO. And quite a "pretty" chip in it's own right. Most of the dies have a small black dot on them and there are clear probe marks on some of the pads around each die. I assume the "dotted" ones failed testing (not very good yield if that's the case).

Anyway, I want to clean the wafer before getting into serious mag (the dots come off with ethanol) but here's my first test shot to try and ID the chip. It was taken at roughly 2x with a DImage 5400 lens (FoV 18mm). I didn't light it too well (just two flat-panel lamps at an angle from each side) so the text is a bit hard to read, but I think the label in the 100% crop shows "BEC19G, Intel*(c)1986". *=illegible.

Anyone know which Intel chip this is? It looks like a processor to me, but is it? Thanks.


Back to top
View user's profile Send private message
mawyatt



Joined: 22 Aug 2013
Posts: 1633
Location: Clearwater

PostPosted: Sat Jun 16, 2018 7:23 am    Post subject: Reply with quote

Steve,

Agree it's "looks" like a processor and a "pretty" chip for those that appreciate it's beauty Very Happy

However, it must be a very simple one since it has so few I/O pads Rolling Eyes

BTW care to tell where you found an old intel wafer?

Best,
_________________
Research is like a treasure hunt, you don't know where to look or what you'll find!
~Mike
Back to top
View user's profile Send private message
Beatsy



Joined: 05 Jul 2013
Posts: 1392
Location: Malvern, UK

PostPosted: Sat Jun 16, 2018 7:51 am    Post subject: Reply with quote

mawyatt wrote:
Steve,

Agree it's "looks" like a processor and a "pretty" chip for those that appreciate it's beauty Very Happy

However, it must be a very simple one since it has so few I/O pads Rolling Eyes

BTW care to tell where you found an old intel wafer?

Best,

Yes, I was beginning to think micro-controller rather than micro-processor too.

Found on Ebay ( https://www.ebay.co.uk/itm/153045911888 ). Sellers father worked at Intel. The end price shown is wrong as my lower offer was kindly accepted. I'm also splitting the wafer (and cost) with someone else - so it worked out cheap enough in the end. I enjoy cleaving wafers too (sort of satisfying in the same way that popping bubble wrap can be). Just a shame the other guy wants his half in one piece... Smile
Back to top
View user's profile Send private message
Beatsy



Joined: 05 Jul 2013
Posts: 1392
Location: Malvern, UK

PostPosted: Sat Jun 16, 2018 2:03 pm    Post subject: Reply with quote

Found it. It's an MCS 196 microcontroller - https://en.wikipedia.org/wiki/Intel_MCS-96

Space-hardened versions were made too. The unqualified/not tested for radiation ones cost $1895.00 in quantities of 5,000-10,000 (2002) Shocked
Fully qualified ones "cost a lot more" - ref: http://www.cpushack.com/tag/mcs-96/

Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Technical and Studio Photography -- Macro and Close-up All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group