This small IC puzzles me, as I can't find any datasheet and even get an idea what it is. "C21SC" and "P134" are printed on top of it (it's SOIC8 package, if I am not mistaken):
Googling produced no results except for links for buying on alibaba.com. Can anyone recognize what it really is?
UPDATE: Can it be this - 24C21 - 2-Wire Serial EEPROM?