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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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 Posted: Mon Oct 10, 2011 4:26 am Post subject: Moto HEPC4801L (6800) |
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i bought some custom marked (HEPC4801L) 40-pin Motos dated week 01 1977 guessing they were 6800s
I finally got around to lifting the lid on one and checking the die markings
The die was marked MC6800
My question is anyone familiar with the part numbering and aware of what they were intended for?
The only other similar parts are HEPC4821L which I presume are 6820s
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susl45
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magictom
Joined: 14 May 2009
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Location: Hawaii
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| Posted: Mon Oct 10, 2011 9:36 am Post subject: |
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In the 60s and 70s, Motorola developed a "HEP" series of parts for "Hobbyists, Experimenters, and ???" = HEP. Perhaps this is one of those parts, with the additional "C" indicating either "Circuit" or "Custom", but I'm just guessing here.
More can be found on page 18 of this PDF :
http://semiconductormuseum.com/MuseumLibrary/HistoryOfTransistorsVolume1.pdf
Last edited by magictom on Mon Oct 10, 2011 11:58 am; edited 1 time in total |
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debs3759
Joined: 18 Jan 2006
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Location: Northampton, Divided Kingdom
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| Posted: Mon Oct 10, 2011 10:42 am Post subject: |
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You need to remove the "[/code]" from the end of that link. It doesn't work as expected with it 
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gshv
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Mon Oct 10, 2011 5:42 pm Post subject: |
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well it seems Motorola did produce a 6800 & 6820 in their HEP range
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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 16, 2011 7:17 pm Post subject: |
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| gshv wrote: | | IMotorola published cross-reference guide for them: |
You should of mentioned you were going for the other one.. and I would not of bid
Was going to get.. scan... then send to Tom as most items in the book are probably pre CPU
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There are 10 types of people in this world:
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gshv
Joined: 01 Feb 2003
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Location: Fairfax, VA USA
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| Posted: Sun Oct 16, 2011 10:59 pm Post subject: |
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| Neon_WA wrote: | | gshv wrote: | | IMotorola published cross-reference guide for them: |
You should of mentioned you were going for the other one.. and I would not of bid
Was going to get.. scan... then send to Tom as most items in the book are probably pre CPU |
I didn't think of it... I expected more competition from electronics hobbyists, as the guide should be useful for them.
Gennadiy |
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gshv
Joined: 01 Feb 2003
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Location: Fairfax, VA USA
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| Posted: Thu Oct 20, 2011 12:43 am Post subject: |
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As a followup: Cross-reference guide, published in 1977, doesn't include information on HEPC4801L.
Gennadiy |
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Neon_WA
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Thu Oct 20, 2011 10:41 am Post subject: |
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... professional applications.
See the yellow transistor package. |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Sat Nov 12, 2011 9:24 pm Post subject: |
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now I have the camera up n running, thought I would post confirmation that the HEPC4801L is a 6800
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doccybrown
Joined: 03 Oct 2005
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| Posted: Sun Nov 13, 2011 6:55 pm Post subject: |
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Thanks for the information, I would not have expected an 6800 behind that markings.
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