(AS7C33512NTD32A / AS7C33512NTD36A) 3.3V 512K x 32/36 Pipelined SRAM
April 2005
®
AS7C33512NTD32A AS7C33512NTD36A
3.3V 512K × 32/36 Pipelined SRAM with NTDTM
Features
• Organization: 524,...
Description
April 2005
®
AS7C33512NTD32A AS7C33512NTD36A
3.3V 512K × 32/36 Pipelined SRAM with NTDTM
Features
Organization: 524,288 words × 32 or 36 bits NTD™ architecture for efficient bus operation Fast clock speeds to 166 MHz Fast clock to data access: 3.4/3.8 ns Fast OE access time: 3.4/3.8 ns Fully synchronous operation Asynchronous output enable control Available in 100-pin TQFP packages www.DataSheet4U.com Individual byte write and global write
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
Logic block diagram
A[18:0] 19 D
Address register Burst logic
Q
19
CLK CE0 CE1 CE2 R/W BWa BWb BWc BWd ADV / LD LBO ZZ
D
Q 19
Write delay addr. registers
CLK
Control logic
CLK
Write Buffer
CLK
512K 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
-166 Minimum cycle time Maximum clock frequency Maximum clock access time Maximum operating current Maximum standby current Maximum CMOS standby current (DC) 6 166 3.4 300 90 60 -133 7.5 133 3.8 275 80 60 Units ns MHz ns mA mA mA
4/21/05, v 2.8
Alliance Semiconductor
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AS7C33512NTD32A/36A
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