27sf512 eeprom

[Frank]

They are officially obsolete. How many people still need them? There are some forsale on eBay and other places. I was thinking about buying in bulk from some folks. Post up with the quantity you want. They would be around $2.50 each shipped.

Anyone game?

[turbojerk]

I'll take 5 (maybe more?) of'em if you make the purchase...

[bgbmxer]

They are officially obsolete. How many people still need them? There are some forsale on eBay and other places. I was thinking about buying in bulk from some folks. Post up with the quantity you want. They would be around $2.50 each shipped.

Anyone game?

i just bought some from one of those guys off ebay its a honda site.

[Frank]

i just bought some from one of those guys off ebay its a honda site.

I was planning on buying up in bulk from him and then reselling them. I know I am buying about 10.

[bgbmxer]

I was planning on buying up in bulk from him and then reselling them. I know I am buying about 10.

i might buy more but i dont think i will need that many cals. heck the engine is not even running yet.

[mcsvt]

Count me in.

[Frank]

Count me in.

For how many?

[mcsvt]

Be nice if I put that in the post, 4.

[turbovanman²]

I'll take 10.

[bgbmxer]

I was planning on buying up in bulk from him and then reselling them. I know I am buying about 10.

did i buy the right thing?

http://i268.photobucket.com/albums/jj17/bgbmxer/P3260338.jpg

[jaysshelby]

I'll take 10 instead of 6

[jl93sundance]

bgbmxer yes you did

I'll take 6.

[bgbmxer]

bgbmxer yes you did

I'll take 6.

bout time something goes right with getting parts for this car

[Frank]

Well I was just searching and thinking about not doing this and instead building an adapter board similar to the moates chip extender that uses the SST 27SF020 with the appropriate switches and indications to allow for these chips to work instead. This will allow you to easily switch between 16 calibrations.

Thoughts?

[moparzrule]

Looks like I bought my 6 from Mouser just in time before they stopped carrying them-

http://i105.photobucket.com/albums/m216/87wagon/Chips.jpg

(gloat gloat)


Be carefull with those chips from Ebay, lots of times they sell used 27sf512 chips...bleh. I've found that you can only re-use them so many times, some chips die faster than others too. I've had anywhere from 3 to 20+ erases and re-burns.

[bgbmxer]

Looks like I bought my 6 from Mouser just in time before they stopped carrying them-

http://i105.photobucket.com/albums/m216/87wagon/Chips.jpg

(gloat gloat)


Be carefull with those chips from Ebay, lots of times they sell used 27sf512 chips...bleh. I've found that you can only re-use them so many times, some chips die faster than others too. I've had anywhere from 3 to 20+ erases and re-burns.

these "seem" to be new but we will have to see once i start putting cals on them

[Frank]

Well I was just searching and thinking about not doing this and instead building an adapter board similar to the moates chip extender that uses the SST 27SF020 with the appropriate switches and indications to allow for these chips to work instead. This will allow you to easily switch between 16 calibrations.

Thoughts?

BTW... the guy on eBay doesn't even have the 27SF512 EEPROMs in his possession. He has to order them and his supply is running low. I have sent an e-mail to MCUMall to ask them about bulk purchasing / group buy.

Thanks,
Frank

[Frank]

BTW... the guy on eBay doesn't even have the 27SF512 EEPROMs in his possession. He has to order them and his supply is running low. I have sent an e-mail to MCUMall to ask them about bulk purchasing / group buy.

Thanks,
Frank

I just got word back from MCUMall. I can get a bulk deal at $2 each with 40 available. I will order them on Monday if you all are still game.

[street_racer]

i will take at least 5 if that works out for you!!

[snoman]

im in for 5 min

[Aries_Turbo]

Well I was just searching and thinking about not doing this and instead building an adapter board similar to the moates chip extender that uses the SST 27SF020 with the appropriate switches and indications to allow for these chips to work instead. This will allow you to easily switch between 16 calibrations.

Thoughts?

16 cals is only for a LM.... 8 cals for a SMEC or a SBEC with chris gangls adapter board required to use the standard eeprom on a SBEC.

the design would also need to be different for the smec and sbec cause the 32kb bin size. the counter programming would be different.

for the LM, you would use the 4 bit binary counter on address pins A14, A15, A16 and A17 to change the location that the LM would read. each binary step (0000, 0001, 0010, 0011, 0100 etc) swaps to the next bin file, a step of 16kbyte.

for the SMEC, the bin size is 32k so the counter would have to skip every other state to jump from 32kbyte section to another... like this 0000, 0010, 0100, 0110, 1000, 1010, 1100, 1110. you only need a 3 bit binary counter cause A14 will always be held low. you could use the 4 bit binary counter but the most significant bit could be tied to the "clear" pin so it resets itself when it counts higher than 7. the other three pins will need to be shifted to the left one bit with the LSB held low.

both would still need the debounced switch, a 7408 AND gate (4 on one chip), some pull down resistors for the address lines, and a little bit of circuitry to make sure the appropriate pins still attach to the 28 pin socket correctly... basically everything but address pins A14-A17.

i dont see why it wouldnt work. the willem programmers burn these chips as well.

Brian

[boost geek]

If these chips work in my zif socketed 87 T2 LM, I'll take 10.

[Aries_Turbo]

yeah they work in a LM and a SMEC.

if you get chris gangl's adapter, they work in a SBEC.

Brian

[turbovanman²]

I just got word back from MCUMall. I can get a bulk deal at $2 each with 40 available. I will order them on Monday if you all are still game.

Yep, I still want 10 if possible.

[Frank]

Ok. Since they only have 40, I am going to order all 40 and everyone up to this moment in time will proportionally get they wanted and I will work with MCUMall to order more.

Thanks,
Frank

[moparzrule]

I wonder why they became obsolete? So many people were still using them, I know it's a popular chip for Honda's too. Weird.

[Aries_Turbo]

they dont get used anywhere near as much as a newer memory chip that generates much higher revenue for the company. its a niche item like a TU 3" swingvalve.

[turbovanman²]

Ok. Since they only have 40, I am going to order all 40 and everyone up to this moment in time will proportionally get they wanted and I will work with MCUMall to order more.

Thanks,
Frank

Sounds good, :nod:

[1BADVAN]

if you get more i would be interested too

[Frank]

Money was sent for the order. With shipping to me they came out to be $2.23 each. Depending on how they ship them to me (plastic sleeve or inserted into foam) will depend on shipping prices to everyone. More to follow...

[mcsvt]

Thanks Frank.

[Frank]

Here is a summary of who is getting what.... shipping pending.



Name Requested Actual Price
Frank 10 6 13.38
Turbojerk 5 3 6.69
Gary 4 3 6.69
Simon 10 7 15.61
Jay 10 7 15.61
Jim 6 4 8.92
Street Racer 5 3 6.69
Snoman 5 3 6.69
Book Geek 10 7 15.61

[boost geek]

Figure out shipping and I will pee pee you...

[Frank]

Uhh????

[bakes]

Dick yur now book geek lol

[boost geek]

Pee pee is p.p., or paypal...

You must not know geek language. :)

[tryingbe]

I seem to be able to find plenty of stock in my sources.

[trannybuster]

Ill take 5.

[Reaper1]

With all this talk about the chips becoming obsolete for our cars, what options are we going to have once the supply is gone? Is it going to be back to only stock stuff or stand alone or is there a way to run other chips that are available? I'm specifically talking about the SBEC/SMEC...

[snoman]

I seem to be able to find plenty of stock in my sources.

care to share these sources?

[88C/S]

XENOCRON carries the chip, I ordered 5 a week ago for $20.35

[moparzrule]

With all this talk about the chips becoming obsolete for our cars, what options are we going to have once the supply is gone? Is it going to be back to only stock stuff or stand alone or is there a way to run other chips that are available? I'm specifically talking about the SBEC/SMEC...

We have other options. You can go with a standard Eprom, the 27C256. The Chips are cheaper but they are a once and done chip, no erase and re-burn.

http://www.mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMutXGli8Ay4kN4PpSZp wfyvhpEAPCDtWXU%3d

[Keito]

We have other options. You can go with a standard Eprom, the 27C256. The Chips are cheaper but they are a once and done chip, no erase and re-burn.

http://www.mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMutXGli8Ay4kN4PpSZp wfyvhpEAPCDtWXU%3d

Can't we run the Ostrich if/when there are no chips available?

[turbovanman²]

Can't we run the Ostrich if/when there are no chips available?

Yep, but some don't want to outlay that kind of cash.

[trannybuster]

Umm waiting on final price+ship...Not being pushy its just i want to make sure I pay promptly so I can FIND that burner and start making some mods. As it is this BS fwdperformance stage5 goes into overboost with a wastegate solenoid failure..wtf...I changed them all to near new ones and I still get waste gate solenoid..'By Zeus's beard' I need to fix it!! Over boost on a Stage5..cmon...

[turbovanman²]

Burners are easy to find, :D

[Aries_Turbo]

As it is this BS fwdperformance stage5 goes into overboost with a wastegate solenoid failure..wtf...I changed them all to near new ones and I still get waste gate solenoid..'By Zeus's beard' I need to fix it!! Over boost on a Stage5..cmon...

not for nothing but did you talk to FWD about this problem before raking them over the coals on here?

Brian

[tryingbe]

care to share these sources?

Answered in PM.

[jaysshelby]

So Frank, you have a total shipped yet?

[Frank]

40 pcs were shipped yesterday and should arrive by Monday. I need more sources to order more at a reasonable price.

[turbovanman²]

40 pcs were shipped yesterday and should arrive by Monday. I need more sources to order more at a reasonable price.

Talk to Tryingbe, ;)

[Aries_Turbo]

he is not willing to share his sources but he will sell them to you for around the same price as frank.

Brian

[Frank]

The EEPROMs got here on Saturday. I will have shipping price by tomorrow night.

[Frank]

Well here is the final price with shipping. Please paypal to frank.katzenberger@squirrelpf.com

Let me know if you have any questions. Thanks!

Frank



Name Requested Actual Price Ship Total
Turbojerk 5 3 6.69 3.00 9.69
Gary 4 3 6.69 3.00 9.69
Simon 10 7 15.61 5.00 20.61
Jay 10 7 15.61 3.00 18.61
Jim 6 4 8.92 3.00 11.92
Street Racer 5 3 6.69 3.00 9.69
Snoman 5 3 6.69 3.00 9.69
Book Geek 10 7 15.61 5.00 20.61

[jaysshelby]

Frank, payment sent. keep me posted if you can get anymore. Thanks again.

[boost geek]

Paypal sent. :)

[turbojerk]

I don't use Paypal. PM me your addy and I'll send you a check.

T

[Frank]

Frank, payment sent. keep me posted if you can get anymore. Thanks again.

Packaged up and should ship today...


Paypal sent. :)

Packaged up and should ship today...


I don't use Paypal. PM me your addy and I'll send you a check.

T

Sent via e-mail

[jl93sundance]

Payment sent

[mcsvt]

Monies sent.

[trannybuster]

So none are left, I didnt see my name on your list?

[Frank]

There are none left. I could only get 40 so I stopped on 4/25/2009. You posted shortly after.

Thanks,
Frank

[turbovanman²]

Money sent, thanks, :clap:

[Frank]

All marked packaged should ship by Wednesday.


Name Requested Actual Price Ship Total Status
Turbojerk 5 3 6.69 3.00 9.69
Gary 4 3 6.69 3.00 9.69 Packaged
Simon 10 7 15.61 5.00 20.61 Packaged
Jay 10 7 15.61 3.00 18.61 Packaged
Jim 6 4 8.92 3.00 11.92 Packaged
Street Racer 5 3 6.69 3.00 9.69
Snoman 5 3 6.69 3.00 9.69
Book Geek 10 7 15.61 5.00 20.61 Packaged

[turbojerk]

Checks in the mail!

Enjoy, the check number is #666. :evil:

[Frank]

Name Requested Actual Price Ship Total Status
Turbojerk 5 3 6.69 3.00 9.69
Gary 4 3 6.69 3.00 9.69 Shipped
Simon 10 7 15.61 5.00 20.61 Shipped
Jay 10 7 15.61 3.00 18.61 Shipped
Jim 6 4 8.92 3.00 11.92 Shipped
Street Racer 5 3 6.69 3.00 9.69
Snoman 5 3 6.69 3.00 9.69
Book Geek 10 7 15.61 5.00 20.61 Shipped

[street_racer]

oh man just saw you posted final shipped price will paypal tonight!

[Frank]

No problem.

[snoman]

payment sent

[street_racer]

payment sent

[jl93sundance]

got mine today, thanks

[Frank]

Name Requested Actual Price Ship Total Status
Turbojerk 5 3 6.69 3.00 9.69 Shipped
Gary 4 3 6.69 3.00 9.69 Shipped
Simon 10 7 15.61 5.00 20.61 Shipped
Jay 10 7 15.61 3.00 18.61 Shipped
Jim 6 4 8.92 3.00 11.92 Shipped
Street Racer 5 3 6.69 3.00 9.69 Shipped
Snoman 5 3 6.69 3.00 9.69
Book Geek 10 7 15.61 5.00 20.61 Shipped

Snoman... can you provide proof you sent payment? Nothing has been received yet.

[snoman]

payment details PM'd

[boost geek]

Got mine today, thanks!

[turbojerk]

My stuff showed today!

Thanks again Uncle Frank!

[Frank]

Shoot... last time I checked, I am younger then you! LOL

[snoman]

mine arrived, safe and sound
thanks again