Help Identifying this chip (ATH342)
It is an Atmel AT24C08C I2C-Compatible, (2-wire) Serial EEPROM, 8-Kbit (1024 x 8). The type is actually given by the second line via its


  Truncation Code ###: 08C




The first line is not really the type, but indicates the manufacturer (Atmel) and date of manufacture: the 42nd week of 2013.

Also, @ = Country of Assembly and AAA...A = Atmel Wafer Lot Number.

Much is owed to https://reverseengineering.stackexchange.com/questions/4526/identifying-an-unknown-chip-on-a-pcb which identified a similar chip.