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eprom's for sharktuning

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Old 04-13-2012, 01:19 PM
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EMan 928
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Default eprom's for sharktuning

I've been speaking with John Speake about using my new Sharktuner MK1 to tune my 1986.5 twin-screw. John suggested a pair of2732A-200ns EPROMs for the data. However, they are not available anywhere.

Can anyone suggest an alternative that would work just as well?

Thanks in advance,
Old 04-13-2012, 01:38 PM
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OBehave
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Eric,
I just received 10 of them from WWW.JAMECO.COM
They had them in stock and shipped to CT from CA in 5 days UPS COD
Ed
Old 04-13-2012, 01:42 PM
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PorKen
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If you have a EPROM burner with an external power supply, there are many 2732 or 2732A variations available. The EZ and LH will work with 100-400ns.

Pocket Programmer III


Used 2732 usually work just fine. Many available on eBay.

Example eBay search:
(2732*,27C32*,AM2732*,D2732*,ETC2732*,ET2732*,HN2732*) (eprom*,chip*,nmos,dip)


You'll need a UV eraser box too. Depending on the eraser, it can take 1/2 hour to erase older 2732 EPROMs, so it's good to have a handful of 2732.
Old 04-13-2012, 01:49 PM
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Originally Posted by OBehave
Eric,
I just received 10 of them from WWW.JAMECO.COM
They had them in stock and shipped to CT from CA in 5 days UPS COD
Ed
Did you buy refurb? website doesn't show new
Old 04-13-2012, 01:50 PM
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Originally Posted by PorKen
If you have a EPROM burner with an external power supply, there are many 2732 or 2732A variations available. The EZ and LH will work with 100-400ns.

Pocket Programmer III


Used 2732 usually work just fine. Many available on eBay.

Example eBay search:
(2732*,27C32*,AM2732*,D2732*,ETC2732*,ET2732*,HN2732*) (eprom*,chip*,nmos,dip)


You'll need a UV eraser box too. Depending on the eraser, it can take 1/2 hour to erase older 2732 EPROMs, so it's good to have a handful of 2732.

So, 250ns version would be ok? Not too slow?
Old 04-13-2012, 01:53 PM
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Originally Posted by 993MI
Did you buy refurb? website doesn't show new

These are what I have.
http://www.jameco.com/webapp/wcs/sto...10001_40125_-1
Old 04-13-2012, 01:55 PM
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250ns is fast for the EZ and LH processors. I've used 400ns w/o issue.


The ST-Micros which Ed has linked would work fine, depending on your burner.


Old AMDs are particulary robust, I've found. (Although they are slower to program, and slow to erase.)
http://www.ebay.com/itm/2732-Eproms-...-/220822609650
Old 04-13-2012, 01:56 PM
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hacker-pschorr
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I bought my last batch from John Speake.
Old 04-13-2012, 02:24 PM
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Originally Posted by Hacker-Pschorr
I bought my last batch from John Speake.
He is fresh out.



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