VAG EEPROM Programmer is a Windows application for safely reading, editing, and writing EEPROM data in Volkswagen, Audi, Seat, and Skoda electronic modules. Designed for technicians and enthusiasts, ...
The heart of the EEPROM programmer is an ATmega8 microcontroller. The address bus of the EEPROM (up to 15 bit) is controlled via two daisy-chained 74HC595 shift registers using hardware SPI @ 8 Mbps.
Behold this ATtiny85 based EEPROM programmer. It seems like a roundabout way of doing things, but [Quinn Dunki] wanted to build to her specifications using tools she had on hand. What she came up with ...