[verkion]

Hey guys,
I'm just wondering if anyone has any clue how many Read and Write--I'm more concerned about that actually. Maybe concerned isn't the right word. Cognizant? LOL. In any case, some of these Electrically reprogrammable flash IC's have rated write cycles in the several hundred to 1000 times which isn't all THAT much.

Thanks!
verkion

 

[Tephra]

manual references 100 Write cycles..

although I have at least 255 on my ECU, and with CT9A we had thousands... (and they had the same 100 write reference)

I don't think anyone except for me and Rich needs to worry about it

 

[chetrickerman]

I have flashed my ECU over 300 times, and no problems have occured.

 

[richardh]

Yep, same here - in the 300s. My personal ROM is up to revision #308, and there have been plenty of "extra" flashes that numbering system doesn't cover.

I fear my XP netbook going all BSOD on me. I fear my battery going flat from all the cooling rans running. I fear breathing while flashing. But the ECU "write limit" doesn't worry me.

If and when its limits are pushed, I expect it would be a gradual degradation - one dodgy flash in 100... then one in 50... then one in 25, etc. I doubt the ECU is going to say "NO MORE WRITEZ 4 U" and go on permanent holiday.

Rich

 

[verkion]

I'm pretty sure that I'm somewhere over the 150 number and less than 200. That's why I asked. LOLOL. And yep, I even had a bad flash somewhere in that mix, but somehow, didn't need to bench the ECU and managed to just turn off the ignition and restart the process! ROFLMAO (That was before I realized that was probably the worst thing for me to do...)

Yeah, so I thought I'd ask to see if anyone has experienced any "funny business" with their ECUs that might be due to degradation/write limits!

Thanks!
verkion

 

[Beeble]

Yep well over 200 on mine aswell i reckon
3 different turbo setups + OCD tuning + SST fiddling gets you there pretty easily

 

[SiliconTek]

I have flashed my ECU over 300 times, and no problems have occured.

I would agree, I am well into the 300 range myself.

OCD tuning

Now we have a name for it!

 

[chetrickerman]

OCD tuning

Exactly. Its a blessing and a curse

 

[Journeyman_steve]

It's not really a cycle limit, it's a statistical measure where the EE's know that there are just some circuits that 'jump' based on the material science and physical layouts EEPROM's don't have MTBF's (mechanical equivalent) so it's a crap shoot. Infinite is possible, as is 1 or 2. They calculate a number based on a really high percentage of samples having a low occurance rate.

I hated theory of statistics!!!!

 

[verkion]

;-) I'm an EE, that's why I asked if anyone knew what it was rated for.

 

[Tephra]

FTM:

• The internal flash memory can be rewritten as many as 100 times.

 

[Murlo26]

I am well over 200 as well so I also believe the 100 is a very "safe" estimate haha.

 

[Journeyman_steve]

;-) I'm an EE, that's why I asked if anyone knew what it was rated for.

LMAO. Personally I've worked hard the past few decades trying to forget the pain that the graduate statistics class gave me!

 

[Golden]

"The internal flash memory can be rewritten as many as 100 times."

That statement doesn't give an upper limit, just a guarantee of 100.