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which flash prom to buy?

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Old May 17, 2005 | 04:20 PM
  #1  
Svelte_SS's Avatar
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From: TEXAS
Car: 1987 Monte Carlo SS
Engine: 5.7L TPI
Transmission: 4 spd auto
which flash prom to buy?

First off I am running a 730 ECM.

I just ordered the pocket programmer and am looking for some proms for it and I am wanting to get the AT29C256 EEPROM so I don't have to buy a UV eraser.

My search on digikey yielded 4 different kinds of AT29C256, so which one do I need?

AT29C256-70TC-ND
AT29C256-70JI-ND
AT29C256-70JC-ND
AT29C256-70TI-ND
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Old May 17, 2005 | 04:54 PM
  #2  
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From: In your ear. No, the other one.
Car: '89 Trans Am WS6
Engine: 350 TPI
Transmission: T5WC
Axle/Gears: 3.08 posi
http://www.moates.net/index.php?cPath=26
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Old May 17, 2005 | 05:23 PM
  #3  
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: which flash prom to buy?

Originally posted by Svelte_SS
First off I am running a 730 ECM.

I just ordered the pocket programmer and am looking for some proms for it and I am wanting to get the AT29C256 EEPROM so I don't have to buy a UV eraser.

My search on digikey yielded 4 different kinds of AT29C256, so which one do I need?

AT29C256-70TC-ND
AT29C256-70JI-ND
AT29C256-70JC-ND
AT29C256-70TI-ND
Actually, none of the above. It looks like Atmel is phasing out the 28pin DIP package devices. The (best) one to get is the AT29C256-70PI.

The P being the plastic 28-DIP, the I being industrial temperature range. With a 70nsec part in a '730 the C (commercial) temperature range, I'd bet is also good to use. I didn't look at the link to moates that Mangus provided. It may be the way to go.

The T and J are different packages, J = PLCC and T = TSOP, both surface mount.

RBob.
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Old May 17, 2005 | 06:27 PM
  #4  
Mangus's Avatar
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From: In your ear. No, the other one.
Car: '89 Trans Am WS6
Engine: 350 TPI
Transmission: T5WC
Axle/Gears: 3.08 posi
Yes, 29C256 going away. Craig's got thousands.
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Old May 17, 2005 | 07:16 PM
  #5  
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From: Chasing Electrons
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Transmission: check
Originally posted by Mangus
Yes, 29C256 going away. Craig's got thousands.
Cool, would you know if are they the I or C temperature rated parts?

RBob.
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Old May 17, 2005 | 07:57 PM
  #6  
Mangus's Avatar
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From: In your ear. No, the other one.
Car: '89 Trans Am WS6
Engine: 350 TPI
Transmission: T5WC
Axle/Gears: 3.08 posi
Originally posted by RBob
Cool, would you know if are they the I or C temperature rated parts?

RBob.
Craig would have to clarify. I believe C.
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Old May 18, 2005 | 07:59 AM
  #7  
Craig Moates's Avatar
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From: Baton Rouge, LA, USA
Car: 87 T/A
Engine: 441 SBC 12.5:1 0.680" Lift
Transmission: T-56
Axle/Gears: 4.10 TruTrac Moser 9"
Yes, they're C-rated. The I was always problematic in terms of availability more than price really. And you're right, at these speeds, they'll work fine outside their normal temperature ranges. The cold temperatures basically slow them down just a little.
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Old May 27, 2005 | 06:18 PM
  #8  
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From: jacksonville, fla
Car: 1987 camaro & 70 mustang
Engine: 2.8l & built 351C
Transmission: borg warner T-5
anyone know where i can get the stuff to burn m own chips for my 87 2.8l i have a standard tranny and some serious engine mods, but i don't know anything about the computer so that is completely stock, i been told that custom chips are the way to go, so i want to do my own with a little help if you don't mind helping
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