This part is a kind of semiconductor called 48LC4M32B2.

Function of this product has MT48LC4M32B2.

Manufacturers : Micron

Image and pinout :

Some of the text within the PDF file :

128Mb: x32 SDRAM Features SDR SDRAM MT48LC4M32B2 – 1 Meg x 32 x 4 Banks Features • PC100-compliant • Fully synchronous; all signals registered on positive edge of system clock • Internal pipelined operation; column address can be changed every clock cycle • Internal banks for hiding row access/precharge • Programmable burst lengths: 1, 2, 4, 8, or full page • Auto precharge, includes concurrent auto precharge and auto refresh modes • Self refresh mode (not available on AT devices) • Auto refresh – 64ms, 4096-cycle refresh (commercial and industrial) – 16ms, 4096-cycle refresh (automotive) • LVTTL-compatible inputs and outputs • Single 3.3V ±0.3V power supply • Supports CAS latency (CL) of 1, 2, and 3 Options • Configuration – 4 Meg x 32 (1 Meg x 32 x 4 ba [ ... ]

48LC4M32B2 PDF Datasheet Download