joseph what chip do i use?
 

http://www1.allamerican.com/direct/R...rt%5Fat=1&MFG=


which one do i use?

whats the diff between PDIP AND TSOP.. etc.

Re:joseph what chip do i use?
 

Its configuration.

http://www.atmel.com/dyn/resources/p...ts/doc0046.pdf

You want the pdip. I 'believe' anything faster than 200ns is fine. Im sure Joseph will clear this all up ;)

Is it just me, or is it hard to find 29c256 eeprom's?

Re:joseph what chip do i use?
 

http://www1.allamerican.com/direct/p...2D12PC++++++++

^^^^ how do i know what voltage the bugga is!

Re:joseph what chip do i use?
 

its 5v. if you have the epromer5 it automatically selects the proper voltage. 14 for $12 sounds like a decent price. I jsut ordered two and they were $5 apiece. oh well. how much is shipping?

Re:joseph what chip do i use?
 

see i duno how they sell them. it sez package = 14 but then "unit price"

jesus i am confused.

Re:joseph what chip do i use?
 

J davis must be gone for the weekend. it looks like you get 14 for $12. thats a good deal as long as they don't kill you on shipping. I paid a flat rate of $6 shipping for my two, but thats all the money I got to spend right now, and i havne't found them anywhere else.

Re:joseph what chip do i use?
 

hey i was told to get these AT29C256-25DC for like 3.29 a piece.. i just ordered 11 of them. so once i get them in the mail if you wanted to buy a ocuple off of me i can sell em to ya. if you dont mind waiting a little bit til for all of the shipping.

scarponze

Re:joseph what chip do i use?
 

hey zulued can u let me borrow one..

i mean am i suposed to send u a 3.29$ money order?

seems kinda ------- dumb lol

Re:joseph what chip do i use?
 

well no im not gonna make you send me 3.29 you got to ad in for shipping. so you would have to take the 3.29 plus whatever shipping charges there are probably like 20-30 bucks or so... it is a big package an all...




no just kiddin around just pm me your address and ill ship it out to ya when i get it.

scarponze

Re:joseph what chip do i use?
 

http://store.yahoo.com/americanmicro...c256-25dc.html for $3.29 each.. though they have a minimum $35 order.. which is 11 chips.

Re:joseph what chip do i use?
 

Those seem like good prices for flash proms.

FYI, the "C" in 29C256 means it's 5v standard memory.

There's a bit of disagreement on what speed memory you should get... I've got a pile of 200ns PROMS that work fine, but other people get CEL 0's because 200ns memory isn't fast enough. I think it's that it would be more expensive to make a bunch of different speed memory, so the company that made the 200ns chips I have just made a big batch of 120 or 150 ns chips and stamped them all whatever.

For safety sake, you want 150 ns or faster.

Re:joseph what chip do i use?
 

why not 29c512 so you have the option of switching between two bins

Re:joseph what chip do i use?
 

hey guys, I have a 1989 honda CRX si and I have no idea what model my ecu is in the car, I am thinking that it is a PM6 but am not sure. I am also really interested in the ghettodyne system, and am not sure what or where i purchase the 28 pin EEPROM Socket, a couple of EEPROMs (ATMEL AT29C256)??? I think, 1 TTL to RS232 converter. (For serial communications) , and the rest of the kit. And where do I get the EEPROM's programmed? Sorry for writing this essay but I am not really willing to buy an MSD 6BTM unit and a FMU. Thnak you for your help

Re:joseph what chip do i use?
 

TurboCRX, scroll through the threads in this forum, you'll find your answers plus alot more. ;)

Joseph, how can I tell (via part#) if a 29c256 is a rewritable eeprom? Finding prices from $13-$3ish, I ASSume the higher priced ones are the rewritables. Enlighten us.

Re:joseph what chip do i use?
 

29-series indicates it's a reflashable EPROM.

27-series require UV light to erase... the cheap plastic OTP (one time burn) ones don't have a window in them to shine UV light into.

Re:joseph what chip do i use?
 

Graham's (MR_DR_PEP) link is where I got mine. They work great.

That's actually been discussed. Recently on PGMFI..

http://pgmfi.hybridgarage.com/phorum...=256#reply_256

Re:joseph what chip do i use?
 

crap my willem programmer doesnt support 29c