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MichelF
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 Posted: Wed Jan 10, 2007 5:13 pm Post subject: Unknown Intel EEPROM LX2839 |
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Hi,
I get an INTEL LX2839 EEPROM 24 golded pins ceramic case
additional marking:
- 7743 ( probably manufactured year 1977 week 43 )
-28826 ???
Unable to find any information on that chip
Anybody help me ?
Thanks |
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Wed Jan 10, 2007 5:44 pm Post subject: |
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| Picture? |
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chip68
Joined: 19 Oct 2004
Posts: 1024
Location: Central Pennsylvania
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| Posted: Wed Jan 10, 2007 10:08 pm Post subject: Re: Unknown Intel EEPROM LX2839 |
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| MichelF wrote: | | - 7743 ( probably manufactured year 1977 week 43 |
Intel's first EEPROM (the 2816) wasn't introduced until 1978. Or did you mean UV EPROM?
- CMW |
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MichelF
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| Posted: Thu Jan 11, 2007 5:26 am Post subject: Re: Unknown Intel EEPROM LX2839 |
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| Yes, It was a mistake, I mean INTEL UVPROM LX2839 |
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MichelF
Guest
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| Posted: Fri Jan 12, 2007 6:29 am Post subject: re:INTEL unknown UVEPROM LX2839 |
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Unable to send a picture on this forum. Not allowed !
Give me an email adresse I'll sent a picture attached to an email.
Sorry |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Fri Jan 12, 2007 6:40 am Post subject: Re: re:INTEL unknown UVEPROM LX2839 |
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| MichelF wrote: | Unable to send a picture on this forum. Not allowed !
Give me an email adresse I'll sent a picture attached to an email.
Sorry |
You need to register on the site, then you can upload pictures. I'd be surprised if anybody posts their email address in the forum (I'm personally getting excessive spam on an email address that has never been given to anyone I don't know reasonably well from either here or the programming community, so certainly wouldn't post it publicly...).
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MichelFaraut
Joined: 12 Jan 2007
Posts: 2
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| Posted: Fri Jan 12, 2007 2:48 pm Post subject: |
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Here below is the picture:
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Fri Jan 12, 2007 4:09 pm Post subject: |
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| Very nice. One of the legs looks mashed? - Lower right. I hope not. |
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jd
Joined: 01 Jan 2006
Posts: 1562
Location: Canada
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| Posted: Fri Jan 12, 2007 7:09 pm Post subject: |
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hmmm...looks like gold paint smudges ...I'd put arrows to their locations, but I guess the bmp extension can't be copied....borring ! 
Not saying it's fake....just curious.
JD |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Fri Jan 12, 2007 11:00 pm Post subject: |
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| chiptalk wrote: | | Looks like thermal paste or gunk rubbed on from something else. |
nope, its the sticky residue from when the sticker covering the window was removed, again, normal 
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MichelFaraut
Joined: 12 Jan 2007
Posts: 2
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| Posted: Sat Jan 13, 2007 5:02 am Post subject: Re:INTEL unknown UV EPROM LX2839 |
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Hi everebody,
First excuse my very bad english !
Next, some informations about that chip.
I get it since many many years, around 1982.
I picked up on a printer mother board prototype realised by wrapping.
One pin ( number 13) was broken and connected to the mother board circuit with small solded cable.
A friend of mine working at the LOGABAX company ( a french printer builder around 1975-1985 ) gave it to me.
So I guess that LX2839 mean LOGABAX2839 chip.
Below 2 more pictures on it.
As you can see, on the other side the chip has been manufactured in Malaysia and 7723 is indicated instead of 7743 !!! |
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unte13
Joined: 05 Dec 2006
Posts: 106
Location: Marseille, FRANCE
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| Posted: Sat Jan 13, 2007 5:53 am Post subject: |
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really nice and interesting this logabax 2708 with 23 pins.
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jd
Joined: 01 Jan 2006
Posts: 1562
Location: Canada
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| Posted: Sat Jan 13, 2007 12:36 pm Post subject: |
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Aaaah  Yes I see the missing pin now !!!
very sad 
Ya, the only reason I questioned the gold, is because the cap is not the same gold as the pins nor the strap ! tis all...
JD |
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