M13S256328A

www.DataSheet4U.com ESMT DDR SDRAM Features z z z z z z z z z z z z z z z z z z z z z M13S256328A 2M x 32 Bit x 4 Banks Double Data Rate SDRAM JEDEC Standard Internal pipelined double-data-rate architecture, two data access per clock cycle Bi-directional data strobe (DQS) On-chip DLL Differential clock inputs (CLK and CLK ) DLL aligns DQ and DQS transition with CLK transition Quad bank operation CAS Latency : 2; 2.5; 3 Burst Type : Sequential and Interleave Burst Length : 2, 4, 8, full page Full page burst length for sequential burst type only Start address of the full page burst should be even All inputs except data & DM are sampled at the rising edge of the system clock(CLK) Data I/O transitions on both edges of data strobe (DQS) DQS is edge-aligned with data for reads; center-aligned with data for WRITE Data mask (DM) for write masking only VDD = 2.3V ~ 2.7V, VDDQ = 2.3V ~ 2.7V Auto & Self refresh 64ms refresh period (8K cycle) SSTL-2 I/O interface 144Ball FBGA package Operating Frequencies : PRODUCT NO. M13S256328A -5BG MAX FREQ 200MHz VDD 2.5V PACKAGE 144 Ball FBGA COMMENTS Pb-free Elite Semiconductor Memory Technology Inc. Publication Date : May. 2007 Revision : 1.2 1/47 www.DataSheet4U.com ESMT Functional Block Diagram CLK CLK CKE Address Mode Register & Extended Mode Register M13S256328A Clock Generator Bank D Bank C Bank B Row Decoder Row Address Buffer & Refresh Counter Bank A Sense Amplifier Command Decoder Control Logic CS RAS CAS WE Data Control Ci...