AS7C33256FT32A Datasheet | Alliance Semiconductor Corporation

November 2004 ® AS7C33256FT32A AS7C33256FT36A 3.3V 256K × 32/36 Flow-through synchronous SRAM Features - - - - - - - Organization: 262,144 words × 32 or 36 bits Fast clock to data access: 7.5/8.5/10 ns Fast OE access time: 3.5/4.0/4.0 ns Fully synchronous flow-through operation Asynchronous output enable control Available in 100-pin TQFP package Individual byte write and global write - - - - - - Multiple chip enables for easy expansion 3.3V core power supply 2.5V or 3.3V I/O operation with separate VDDQ Linear or interleaved burst control Snooze mode for reduced power-standby mon data inputs and data outputs .. Logic block diagram LBO CLK ADV ADSC ADSP A[17:0] 18 CLK CE CLR Q0 Burst logic Q1 2 2 D Q CE Address register CLK D DQd Q Byte write registers CLK D DQ Q c Byte write registers CLK D DQb Q Byte write registers CLK D DQa Q Byte write registers CLK D Enable CE register CLK Q 256K × 32/36 Memory array 18 32/36 32/36 GWE BWE BWd BWc BWb BWa CE0 CE1 CE2 OE Output registers CLK Input registers CLK Power down D Enable Q delay register CLK 32/36 DQ[a:d] Selection guide Minimum cycle time Maximum clock access time Maximum operating current Maximum standby current Maximum CMOS standby current (DC) -75 8.5 7.5 300 110...