A couple of EEPROM questions.

petespieces · 8th August 2014, 21:54

I have been playing with EEPROM's and have a few questions.

Question 1

What's the difference between :

93s56
93c56
93cs56
93lcs56

Question 2

Why is it necessary to virginise an EEPROM when fitting a used IPK, if you have for instance an EZP2010 programmer why can't you simply copy the memory from one chip to another.

Just curious.

Pete.

klarzy · 8th August 2014, 21:58

I think the security programing goes into a protected area??
From what I understand the copy / paste of the .bin does not cover this...
thus a copy of the old eeprom bin will not work but physically moving the eeprom to the new IPK (with the protected area on board) will.

Virginisation wiped the protected area of the "new" ipk so that a T4 can fill in the new cars security details, if it is not virginised the old details can not be over written..

petespieces · 8th August 2014, 22:05

Thanks Klarzy.

As I understand it a virgin bin can be written to a new EEPROM then?

Do you know the difference between the types?

Pete.

klarzy · 8th August 2014, 22:09

Quote:

Originally Posted by petespieces

Thanks Klarzy.

As I understand it a virgin bin can be written to a new EEPROM then?

Do you know the difference between the types?

Pete.

as far as I understand it is to do with the stepper motor calibration for the speedo and tacho, maybe some other bits as well but I have seen bins for V8, diesel, petrol and one for petrol KPH

I have aquired the Soci clip to connect directly to the EEPROM but I am waiting for the programmer interface to arrive from the far east so I can start my own learning...

klarzy · 8th August 2014, 22:13

Quote:

Originally Posted by petespieces

Thanks Klarzy.

As I understand it a virgin bin can be written to a new EEPROM then?

Do you know the difference between the types?

Pete.

With regards to the new EEPROM, yes a virgin bin can be written, but you still need a T4 to write the security data which needs live comms between the LSM,ECU and immobiliser to work (otherwords needs to be done on the car) unless you are Phil T4 or Brian with the little grey cells to do it in a coal mine khazi half a mile underground using 2 sticks of chewing gum and a half burnt candle) McGyver eat your heart out..

petespieces · 8th August 2014, 22:23

All interesting stuff.

I have the clip which works well off board, no luck on board though, board taking power I think.

8th August 2014, 21:54	#1
petespieces Gets stuck in Rover 75 Saloon 1.8 auto Join Date: Mar 2012 Location: Le Theil de Bretagne (France) Posts: 661 Thanks: 36 Thanked 37 Times in 29 Posts	A couple of EEPROM questions. I have been playing with EEPROM's and have a few questions. Question 1 What's the difference between : 93s56 93c56 93cs56 93lcs56 Question 2 Why is it necessary to virginise an EEPROM when fitting a used IPK, if you have for instance an EZP2010 programmer why can't you simply copy the memory from one chip to another. Just curious. Pete.

8th August 2014, 21:58	#2
klarzy This is my second home none but not gone Join Date: Mar 2013 Location: March, Cambs Posts: 16,437 Thanks: 894 Thanked 4,247 Times in 3,025 Posts	I think the security programing goes into a protected area?? From what I understand the copy / paste of the .bin does not cover this... thus a copy of the old eeprom bin will not work but physically moving the eeprom to the new IPK (with the protected area on board) will. Virginisation wiped the protected area of the "new" ipk so that a T4 can fill in the new cars security details, if it is not virginised the old details can not be over written.. __________________ [SIGPIC][/SIGPIC]….All praise Bananaswan….

8th August 2014, 22:05	#3
petespieces Gets stuck in Rover 75 Saloon 1.8 auto Join Date: Mar 2012 Location: Le Theil de Bretagne (France) Posts: 661 Thanks: 36 Thanked 37 Times in 29 Posts	Thanks Klarzy. As I understand it a virgin bin can be written to a new EEPROM then? Do you know the difference between the types? Pete.

8th August 2014, 22:23	#6
petespieces Gets stuck in Rover 75 Saloon 1.8 auto Join Date: Mar 2012 Location: Le Theil de Bretagne (France) Posts: 661 Thanks: 36 Thanked 37 Times in 29 Posts	All interesting stuff. I have the clip which works well off board, no luck on board though, board taking power I think.