**Notes on the Proxim 8494 - US** The chip used for the SPI EEPROM is an ATMEGA 24C series,. the labelling is ATMLH118C64DM ,. the 118 part is the lot number, 2011, week 18. The part number is more like //AT24C64DM// Link to data sheet http://www.atmel.com/Images/doc8717.pdf