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AS7C33512NTD18A Datasheet(PDF) 1 Page - Alliance Semiconductor Corporation |
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AS7C33512NTD18A Datasheet(HTML) 1 Page - Alliance Semiconductor Corporation |
1 / 19 page November 2004 Copyright © Alliance Semiconductor. All rights reserved. ® AS7C33512NTD18A 3.3V 512K × 18 Pipelined burst Synchronous SRAM with NTDTM 11/30/04; v.2.1 Alliance Semiconductor 1 of 19 Features • Organization: 524,288 words × 18 bits •NTD™ architecture for efficient bus operation • Fast clock speeds to 166 MHz • Fast clock to data access: 3.5/4.0 ns •Fast OE access time: 3.5/4.0 ns • Fully synchronous operation • Common data inputs and data outputs • Asynchronous output enable control • Available in100-pin TQFP • Byte write enables • Clock enable for operation hold • Multiple chip enables for easy expansion • 3.3V core power supply • 2.5V or 3.3V I/O operation with separate VDDQ • Self-timed WRITE cycles • “Interleaved” or “Linear burst” modes • Snooze mode for standby operation Selection Guide -166 –133 Units Minimum cycle time 6 7.5 ns Maximum clock frequency 166 133 MHz Maximum clock access time 3.5 4 ns Maximum operating current 475 400 mA Maximum standby current 130 100 mA Maximum CMOS standby current (DC) 30 30 mA Address D Q CLK register Output Register DQ[a:b] 18 18 19 19 CLK CE0 CE1 CE2 A[18:0] OE CLK CEN Control CLK logic Data D Q CLK Input Register 18 18 OE 512K x 18 SRAM Array R/W DQ [a:b] BWa BWb CLK Q D ADV/LD LBO Burst logic addr. registers Write delay 18 19 Logic block diagram ZZ 18 CLK |
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