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Buying AT29C256 EEPROM's

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Old 07-14-2004, 06:35 PM
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Buying AT29C256 EEPROM's

Just wondering where I might be able to come up with some AT29C256 EEPROM's in my area, would a computer/electronics(Radio Shack?) type place be the most likely to carry them?

I'd buy some from Moates.net, but I'm hoping to hit the track for Friday, and I'd like to swap a different BIN by then to see what kind of difference it makes.

-Dustin
Old 07-14-2004, 11:13 PM
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We have a large electronics warehouse local by the name of Mainline Electronics, some place like that would probably be your best bet. The only downside to these type places is they usually have a minimum order $$$. I think it's $25 at our place.

Every time I've gone to radioshack looking for something like that, they either don't carry it and can't get it, or they don't carry it and have to special order it. If you can't find any local specialty warehouses, you could give em a try, but I doubt they'd have it.
Old 07-15-2004, 07:39 AM
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i use these guys. fast shipping too!

http://www.jdr.com/interact/item.asp?itemno=gr-atmel

extra charge if you don't make the minimum order amount. worth the $5 for their speediness.
Old 07-15-2004, 09:26 AM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
wow!

They seem a lot more expensive than when i bought mine.... Mine all came from Jameco i believe have to do some research so i can get a new batch:-) I but them at the 10 piece break to get a deal , can never have to many lying around when especially when u help tune friends cars lol

later
Jeremy
Old 07-15-2004, 09:51 AM
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What part of Canade u from? I have a spare 1 if your close enough to me
Old 07-15-2004, 11:16 AM
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And I have some if you are on the West Coast.


3.8TransAm,
I think the supplies are getting a little more scarce for the 256's and the price has gone up because of that.
Old 07-15-2004, 12:00 PM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
Jameco dropped $1 if u bought 10 at once so thats how i do it
Old 07-15-2004, 12:10 PM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
futurlec.com has better prices it seems 2 different 29c numbers though and $1 difference anyone know?
http://www.futurlec.com/ICFLASH.shtml

later
Jeremy
Old 07-15-2004, 12:53 PM
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Package style, you need the DIP not the PLCC.

Jameco's never had them that I know of. They are getting a little harder to find, but there are still a few vendors that will stock them. Better check on stock before you order though, many vendors are perpetually out...
Old 07-15-2004, 01:28 PM
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Car: 90 Integra
Engine: B18
Transmission: 5-speed
Unfortunately I am neither on the West nor the East coast, I am in between in the middle of nowhere(Praries )

I'm going to see if there are any decent electronics places nearby, if I can't get one for tomorrow, then I'll just order online from somewhere and wait till they get here.

Thanks for the help guys,
-Dustin
Old 07-15-2004, 02:20 PM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
mine was JDR(i think) , brain fart their(least im almost 100% sure)


possibly pioneer?

I know for sure that if i ordered 10 or mor it dropped like .75 or a $1 off each, thats the only way i pick them up new

later
Jeremy
Old 07-15-2004, 03:42 PM
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Engine: 5.7L V8
Transmission: 700R4
Digikey also lists them, and have a canadian specific website.

http://rocky.digikey.com/scripts/Pro...=AT29C256-70PC
Old 07-15-2004, 04:57 PM
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Car: 90 Integra
Engine: B18
Transmission: 5-speed
Just checked their website, what is the difference b/t these two chips? Can't figure it out...

Technical/Catalog Information AT29C256-70PC-ND
Standard Package 14
Category Integrated Circuits (IC's)
Family FLASH Memory
Vendor Atmel
Memory Type FLASH
Memory Size 256K (32K x 8)
Speed 70nS
Interface Parallel
Package / Case 28-DIP
Packaging Tube
Voltage-Supply 4.5V - 5.5V
Other Names AT29C25670PC
$7.99

Technical/Catalog Information AT29C256-70PI-ND
Standard Package 14
Category Integrated Circuits (IC's)
Family FLASH Memory
Vendor Atmel
Memory Type FLASH
Memory Size 256K (32K x 8)
Speed 70nS
Interface Parallel
Package / Case 28-DIP
Packaging Tube
Voltage-Supply 4.5V - 5.5V
Other Names AT29C25670PI
$9.49

-Dustin
Old 07-15-2004, 05:41 PM
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Car: check
Engine: check
Transmission: check
You guys must not read other posts

The PC is a DIP package in the commercial temperature range (0c to 70c)

The PI is a DIP package in the industrial temperature range (-40c to 80c). My preference is the PI device.

Also note that the -20 parts are slower and are cheaper. And plenty fast for a C3 or P4 ECM.

AT29C256-20PI @ $3.32US each, but non-stock at DigiKey.

RBob.
Old 07-15-2004, 09:27 PM
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Car: 90 Integra
Engine: B18
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Thanks for the update, when you are in a hurry, not much time to search!

I didn't even have time to stop by any electronics places today, so I think I'll get a baseline of what my car runs with the ADS Superchip in it now, and then get some track times once I get a few PROM's ordered.

-Dustin
Old 07-16-2004, 01:23 AM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
lol

I read the other posts lol but the chip end of things gets wierd really quick for the non electronics guys.... bout 30 things come up as 29c256


but thanks for the heads up at digikey, gonna order another batch should give me at least 10 extra at all time...

Later
Jeremy
Old 07-16-2004, 12:33 PM
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Check out mouser.com too. When I ordered some more a week ago, they were about .30 cheaper each.
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