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PICList Thread
'[EE]: Wanted -- 28C16 EEPROM'
2011\02\23@212208 by Philip Pemberton

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Hi guys,

It seems I've really cheesed off the Gods of Electronics this week... or my HP 16500B. One or the other.

A few of you might be aware that it scrambled the 28C16 MAC address EEPROM earlier this week. I pulled the EEPROM, reprogrammed it, and reinstalled it. This worked fine until today, when I swapped the 504MB hard drive for a CompactFlash card. The LAN card wouldn't respond, then I power-cycled and got the "LAN Card EEPROM corrupt" message again.

Except this time it's terminal.

Pulled the chip from the socket -- data line D6 has become stuck low. So a fully erased chip returns 0xBF... joy.

Does anyone have a spare PLCC-packaged 28C16 EEPROM? This is a parallel EEPROM in a 32-pin package, and was made by a ton of companies. I need something 200ns or faster, ideally. The original part was a KM28C16J-20 (Samsung), although a Catalyst/ONSemi CAT28C16AGI, Atmel AT28C16 or similar part should be fine.

It seems these parts have become extremely difficult to find... :(

Thanks,
-- Phil.
spam_OUTpiclistTakeThisOuTspamphilpem.me.uk
http://www.philpem.me.uk

2011\02\25@151958 by Sergey Dryga

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Philip Pemberton <piclist <at> philpem.me.uk> writes:

>
> Hi guys,
>
> It seems I've really cheesed off the Gods of Electronics this week... or
> my HP 16500B. One or the other.

<SNIP>

> Does anyone have a spare PLCC-packaged 28C16 EEPROM? This is a parallel
Philip,

mouser.com has it, even 90ns version.
Good luck pleasing the Gods (and your HP 16500B)!

Sergey Dryga
http://beaglerobotics.com

2011\02\25@172252 by Philip Pemberton

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On 25/02/11 20:19, Sergey Dryga wrote:
> mouser.com has it, even 90ns version.

I managed to snag a couple from ON Semiconductor's samples page (along with a couple of SMPSU chips and some databooks). Should hopefully get them some time next week -- the Fedex tracking log suggests they're somewhere in Kazakhstan at the moment (or they were last time I checked!)

$15 shipping doesn't seem too bad to me...

> Good luck pleasing the Gods (and your HP 16500B)!

I think I'll need all the luck I can get!

At the moment, I get the feeling I'm serving a valuable (?) role as the universe's chew-toy...

-- Phil.
.....piclistKILLspamspam@spam@philpem.me.uk
http://www.philpem.me.uk

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