EEPROM ST95080 LOSES THE MEMORY!!!!!

[ChipDoctor]

Hi guys

I planned the eeprom ST95080 and the car worked

After two or three ignited off the car the eeprom loses its memory and the engine stops working


Why eeprom lose the clean dump?????????

The legs F3 and F4 I have not quit, maybe to blame this??????

Can anyone to help me?????

Best Regards!

[Shmortz]

change it with new one

[ChipDoctor]

Good morning my friends

I write the eeprom ST95080 with a clean dump, and the car is running properly
After 2-3 times ignited-Turn off the engine stops working
I read the eeprom ST95080 and I see that has changed the dump
I have programmed 2 times but the dump is changed after some hours of operation of the car

What is the problem and changes the dump!!!!!!!!!!

Anyone who knows anything to help me please!!!

Best Regards!!!

[Zmann]

Simply, the problem is the BSI triggering your S2000 ECU to write back the lock code to eeprom while ignition off.

[camil]

Try writting clean dump again, then lift pin3 of the eeprom from the pcb and bridge it to pin4.

[ChipDoctor]

Hi

I do not know whether to blame I have not cut the feet F3 and F4
Maybe blame this?????????

Best Regards!!!

[racin-snake]

cut f3 f4 and test ?

[camil]

Lift pin3 and bridge to pin4 will write protect the eeprom, so no changes in dump anymore.

[ChipDoctor]

Hi Frend

Can you make a plan with interconnecting with UPA and EEPROM ???

Best Regards