This part is a kind of semiconductor called 46V16M16.

Function of this product has MT46V16M16.

Manufacturers : Micron Technology

Image and pinout :

Some of the text within the PDF file :

PRELIMINARY‡ 256Mb: x4, x8, x16 DDR333 SDRAM Addendum DOUBLE DATA RATE (DDR) SDRAM FEATURES • 167 MHz Clock, 333 Mb/s/p data rate • VDD = +2.5V ±0.2V, VDDQ = +2.5V ±0.2V • Bidirectional data strobe (DQS) transmitted/ received with data, i.e., source-synchronous data capture (x16 has two - one per byte) • Internal, pipelined double-data-rate (DDR) architecture; two data accesses per clock cycle • Differential clock inputs (CK and CK#) • Commands entered on each positive CK edge • DQS edge-aligned with data for READs; centeraligned with data for WRITEs • DLL to align DQ and DQS transitions with CK • Four internal banks for concurrent operation • Data mask (DM) for masking write data (x16 has two - one per byte) • Programmable burst lengths: 2, 4, or 8 • Concurre [ ... ]

46V16M16 PDF Datasheet Download