This part is a kind of semiconductor called 71C17403C.

Function of this product has GM71C17403C.

Manufacturers : Hynix Semiconductor

Image and pinout :

Some of the text within the PDF file :

GM71C(S)17403C/CL 4,194,304 WORDS x 4 BIT CMOS DYNAMIC RAM Description The GM71C(S)17403C/CL is the new generation dynamic RAM organized 4,194,304 words x 4 bit. GM71C(S)17403C/CL has realized higher density, higher performance and various functions by utilizing advanced CMOS process technology. The GM71C(S)17403C/CL offers Extended Data Out (EDO) Mode as a high speed access mode. Multiplexed address inputs permit the GM71C(S)17403C/CL to be packaged in a standard 300 mil 24(26) pin SOJ and a standard 300mil 24(26) pin plastic TSOP II. The package size provides high system bit densities and is compatible with widely available automated testing and insertion equipment. System oriented features include single power supply 5V+/-10% tolerance, direct interfacing capability with high performan [ ... ]

71C17403C PDF Datasheet Download