SDRAM AS4SD16M16 Preliminary Austin Semiconductor, Inc. 256 MB: 16 Meg x 16 SDRAM PIN ASSIGNMENT (Top View) Synchronous DRAM Memory 54-Pin TSOP FEATURES * Configuration: 16 Meg x 16 (4 Meg x 16 x 4 banks) * 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 * 64ms, 8,192-cycle refresh * WRITE Recovery (tWR = "2 CLK") * LVTTL-compatible inputs and outputs * Single +3.3V 0.3V power supply OPTIONS * * * A12 MARKING Plastic Package - OCPL* 54-pin TSOP (400 mil) Timing (Cycle Time) 7.5ns @ CL = 3 (PC133) or 7.5ns @ CL = 2 (PC100) DG No. 901 16 Meg x 16 Configuration 4 Meg x 16 x 4 banks Refresh Count 8K Row Addressing 8K (A0-A12) Bank Addressing 4 (BA0, BA1) Column Addressing 512 (A0-A8) -75 Operating Temperature Ranges -Industrial Temp (-40C to 85 C) IT -Industrial Plus Temp (-40C to +110C) IT+ -Military Temp (-55C to 125C) XT*** Note: "\" indicates an active low. KEY TIMING PARAMETERS SPEED CLOCK ACCESS TIME GRADE FREQUENCY CL = 2** CL = 3** -75 133 MHz - 5.4ns -75 100 MHz 6ns - SETUP TIME 1.5ns 1.5ns HOLD TIME 0.8ns 0.8ns For more products and information please visit our web site at www.austinsemiconductor.com *Off-center parting line **CL = CAS (READ) latency ***Consult Factory AS4SD16M16 Rev. 1.0 4/02 Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 1 SDRAM AS4SD16M16 Preliminary Austin Semiconductor, Inc. MECHANICAL DEFINITIONS ASI Case #901 (Package Designator DG) NOTE: 1. All dimensions in inches (millimeters) MAX or typical where noted. MIN 2. Package width and length do not include mold protrusion; allowable mold protrusion is .025mm per side. ORDERING INFORMATION Device Number AS4SD16M16 Package Speed ns Process Type DG -75 *AVAILABLE PROCESSES IT = Industrial Temperature Range IT+ = Industrial Plus Temperature Range XT = Military Temperature Range AS4SD16M16 Rev. 1.0 4/02 /* -40oC to +85oC -40C to +110C -55oC to +125oC Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 2