INTRODUCTION
When the data EEPROM is not available in a ST7 device, it can be emulated by the XFlash memory with some restrictions. This Application Note describes how to emulate this feature with a ST72F264 device and the restrictions this emulation implies.

Data EEPROM can be emulated in all XFlash devices (all Lite, ST72F344, ....).

For more information concerning ST7 programming, including a .zip file with the complete corresponding code for the ST72F264, visit our web site at www.st.com.