eeprom and flash memory

by **saukiyo** » Wed Mar 13, 2019 2:20 am

which is the differencce between eeprom and flash?ty

by **jurebv** » Wed Mar 13, 2019 8:37 am

Flash contains maps that are parameters for engine working for example fuel dosage,rail presure,turbo pressure...etc while eeprom contains vehicle specific.data like VIN,immobiliser...etc

by **ogi** » Mon Mar 18, 2019 10:02 pm

jurebv wrote:Flash contains maps that are parameters for engine working for example fuel dosage,rail presure,turbo pressure...etc while eeprom contains vehicle specific.data like VIN,immobiliser...etc

Hi, i have 1.6hdi Citroen C4 with ecu from Peugeot 3008 . These ecus have same sw and hw number. I read eeprom and wrote in new one.

But when I want to connect my car via lexia as Citroen, all is OK expect that the ecu is read in the list as "unknown unit". But when i connect car as peugeot then ecu is known. So My question is: "where is this information stored?" Is it really in flash memory?

by **elkar** » Wed Sep 04, 2019 2:03 pm

In general EEPROM is byte erasable. Each address bit can be erased and reprogrammed and smaller than Flash .

by **exception** » Fri Oct 28, 2022 12:18 am

elkar wrote:In general EEPROM is byte erasable. Each address bit can be erased and reprogrammed and smaller than Flash .

Is flash byte erasable too?

by **viktorcho** » Sat Mar 30, 2024 10:11 pm

exception wrote:
elkar wrote:In general EEPROM is byte erasable. Each address bit can be erased and reprogrammed and smaller than Flash .

Is flash byte erasable too?

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