AS7C251MNTD32A

January 2005 ® AS7C251MNTD32A AS7C251MNTD36A 2.5V 1M × 32/36 Pipelined SRAM with NTDTM Features Organization: 1,048,576 words × 32 or 36 bits NTD™architecture for efficient bus operation Fast clock speeds to 200 MHz Fast clock to data access: 3.2/3.5/3.8 ns Fast OE access time: 3.2/3.5/3.8 ns Fully synchronous operation pipelined mode www.DataSheet4U.com Common data inputs and data outputs Asynchronous output enable control Logic block diagram A[19:0] 20 D Available in 100-pin TQFP packages Byte write enables Clock enable for operation hold Multiple chip enables for easy expansion 2.5V core power supply Self-timed write cycles Interleaved or linear burst modes Snooze mode for standby operation Address register Burst logic Q 20 CLK CE0 CE1 CE2 R/W BWa BWb BWc BWd ADV / LD LBO ZZ D Q 20 Write delay addr. registers CLK Control logic CLK Write Buffer CLK 1M x 32/36 SRAM Array DQ[a,b,c,d] 32/36 D Data Q Input Register CLK 32/36 32/36 32/36 32/36 CLK CEN CLK OE Output Register 32/36 OE DQ[a,b,c,d] Selection guide -200 Minimum cycle time Maximum clock frequency Maximum clock access time Maximum operating current Maximum standby current Maximum CMOS standby current (DC) 1/17/05, V 1.2 -166 6 166 3.5 400 150 90 -133 7.5 133 3.8 350 140 90 Units ns MHz ns mA mA mA P. 1 of 18 5 200 3.2 450 170 90 Alliance Semiconductor Copyright © Alliance Semiconductor. All rights reserved. AS7C251MNTD32A AS7C251MNTD36A ® 2.5V 32 Mb Syn...