The full part number is AT24C64A-10TQ-2.7 but it's labeled as Q3, A, AT64A. The chip is manufactured by Atmel specifically for Automotive industry as a 2-Wire EEPROM. Original EPROM's could only be altered after being erased and re written using ultraviolet light if they chip was made with that ability. Note that an EPROM is not the same thing although they sever the same function.
Normally the content of this memory can only be modified by Audi. com) or this site as a token of appreciation is not a bad idea.ĮEPROM (pronounced e-prom) stands for Electrically Erasable Programmable Read-Only Memory and is a type of non-volatile memory used in MMI's motherboard to permanently store details. Objective: This page is intended to provide the AudiEnthusiasts a general knowledge in MMI EEPROM, with the aim to help in-house projects to be more entertaining and successful.Ĭost: This information is provided for free, however, donations to the original author (Keldo at Keldo.
#Audi radio code reader serial
Scope: This page will cover the physical location and specification of the EEPROM, highlighting known sections of the EEPROM content that maintain MMI details such as part and serial number, Component Protection, available languages and some other cool hex data. Purpose: The purpose of this document is to dump and share my and the original Authors knowledge that has been gained by experimenting and spending countless hours and many nights trying to reverse engineer my MMI units.
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