chip socketing, Tjwong please look
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Instructor
Joined: Jun 2003
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From: broken arrow ok
chip socketing, Tjwong please look
I've seen some post on people who solder in zif sockets and stuff and I guess pull out the chip each time they need to burn it, but soldering in the socket can be difficult and the cover may not always fit back on the chip. Also pulling out the chip can be a pain when your trying not to bread a pin. I have been soldering the atmel 29c256 flash chip in place of the old one with no socket and made an adapter to burn the chip without removing it from the carrier. Tjwong if you see this let me know what you think. The eprom shown is not the stock one, it is an old hypertech, but its just to show how it works.
Le Mans Master
Joined: Jan 2003
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From: Portland Oregon
I use a similar adapter made from a 32 pin header assembly. It works fine, most of the adapters I get are from Craig Moates. The have a nice socket on the board that I retains the chip well. I use the header adapter to read and program the chips with rather than removing the chip to work in it and risking damage to the pins. You can use a low profile ZIF socket that fits in the ECM, I have found them in the DigiKey catalog. But really unless you want a ZIF socket there is no reason to use one if you have or make a adapter to plug the board/chip assembly into what ever you are using for programming the chips. The only other ECM that would require a socket is the old 7870 and 7747 ECMs which do not use a MEMCAL style chip. Those ECMs I do desolder the OE socket and install a Moates adapter which takes a 29C256 or a 27SF256 flash chip. It requires removing the board from the ECM and desoldering the oroginal socket, then the Moates adapter is soldered in place, it has a onboard ZIF socket that accepts a flash EEPROM.
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Originally Posted by tjwong
I use a similar adapter made from a 32 pin header assembly. It works fine, most of the adapters I get are from Craig Moates. The have a nice socket on the board that I retains the chip well. I use the header adapter to read and program the chips with rather than removing the chip to work in it and risking damage to the pins. You can use a low profile ZIF socket that fits in the ECM, I have found them in the DigiKey catalog. But really unless you want a ZIF socket there is no reason to use one if you have or make a adapter to plug the board/chip assembly into what ever you are using for programming the chips. The only other ECM that would require a socket is the old 7870 and 7747 ECMs which do not use a MEMCAL style chip. Those ECMs I do desolder the OE socket and install a Moates adapter which takes a 29C256 or a 27SF256 flash chip. It requires removing the board from the ECM and desoldering the oroginal socket, then the Moates adapter is soldered in place, it has a onboard ZIF socket that accepts a flash EEPROM.
Thanks, &
- Steve-
Last edited by JrRifleCoach; Oct 24, 2004 at 03:27 PM.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
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From: Portland Oregon
Steve, here is where you can find information about what to use in an old 870 ECM:
http://www.moates.net/product_info.p...products_id=36
With Craigs adapter you can just use a conventional flash memory chip instead of having to use them old 2732 chips that require a UV eraser. Not to mention that the old 2732s are getting harder to find and most of the time we get "pulls" that are sometimes not servicable.
http://www.moates.net/product_info.p...products_id=36
With Craigs adapter you can just use a conventional flash memory chip instead of having to use them old 2732 chips that require a UV eraser. Not to mention that the old 2732s are getting harder to find and most of the time we get "pulls" that are sometimes not servicable.
Team Owner
Joined: Sep 2003
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Originally Posted by tjwong
http://www.moates.net/product_info.p...products_id=36
With Craigs adapter you can just use a conventional flash memory chip instead of having to use them old 2732 chips that require a UV eraser. Not to mention that the old 2732s are getting harder to find and most of the time we get "pulls" that are sometimes not servicable.
With Craigs adapter you can just use a conventional flash memory chip instead of having to use them old 2732 chips that require a UV eraser. Not to mention that the old 2732s are getting harder to find and most of the time we get "pulls" that are sometimes not servicable.
Burning Brakes
Joined: Dec 2002
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From: Lakeland fl
TJWong, I tried one of those low profile ZIF's, and while it may clear everything, the legs on it are far too short to engage the socket in a factory memcal (165ECM).
I have a memcal with a standard ZIF soldered to it that works fine, and I also have a memcal that I have taken the chip out a few times, and its still working. I dont expect it to be good for long though- its already showing wear.
New92', I would still prefer a ZIF. Its made to make eproms quickly and safely removeable. The pins on your ECM that mate to the memcal are pretty sturdy, but I wouldnt want to test their durability. Flash Eprom=$5, ECM=$90. What would you rather wear out? That blue plastic eprom cover is totally not needed either.
The bottom line is-
*Putting a new flash chip in your factory memcal, using a header to read and burn is a good idea.
*Putting a ZIF on your factory memcal is a probably a better idea
*Using a low profile ZIF on your factory memcal- good luck.
*Removing your stock chip and continually removing/replacing chips in your stock memcal- bad idea. It may work once, twice or even a few times but it wont work for long.
*Getting a moates adapter, leaving you factory memcal untouched, and having a ZIF to do whatever you want, is the best idea- although the most costly, even thought its only $40-$50.
I have a memcal with a standard ZIF soldered to it that works fine, and I also have a memcal that I have taken the chip out a few times, and its still working. I dont expect it to be good for long though- its already showing wear.
New92', I would still prefer a ZIF. Its made to make eproms quickly and safely removeable. The pins on your ECM that mate to the memcal are pretty sturdy, but I wouldnt want to test their durability. Flash Eprom=$5, ECM=$90. What would you rather wear out? That blue plastic eprom cover is totally not needed either.
The bottom line is-
*Putting a new flash chip in your factory memcal, using a header to read and burn is a good idea.
*Putting a ZIF on your factory memcal is a probably a better idea
*Using a low profile ZIF on your factory memcal- good luck.
*Removing your stock chip and continually removing/replacing chips in your stock memcal- bad idea. It may work once, twice or even a few times but it wont work for long.
*Getting a moates adapter, leaving you factory memcal untouched, and having a ZIF to do whatever you want, is the best idea- although the most costly, even thought its only $40-$50.
Last edited by SBNova; Oct 27, 2004 at 12:50 PM.
