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Alliance Semiconductor Corporation

AS7C33256NTF32A Datasheet Preview

AS7C33256NTF32A Datasheet

(AS7C33256NTF32A / AS7C33256NTF36A) 3.3V 256K x 2/36 Flowthrough Synchronous SRAM

No Preview Available !

November 2004
AS7C33256NTF32A
AS7C33256NTF36A
®
3.3V 256K×32/36 Flowthrough Synchronous SRAM with NTDTM
Features
• Organization: 262,144 words × 32 or 36 bits
• NTDarchitecture for efficient bus operation
• Fast clock to data access: 7.5/8.5/10 ns
• Fast OE access time: 3.5/4.0 ns
• Fully synchronous operation
• Flow-through mode
• Asynchronous output enable control
www.DataSheet4AUv.caoimlable in 100-pin TQFP
• Byte write enables
• Clock enable for operation hold
• Multiple chip enables for easy expansion
Logic Block Diagram
A[17:0]
18
D
Q
Address
register
Burst logic
CLK
CE0
CE1
CE2
R/W
BWa
BWb
BWc
BWd
ADV / LD
LBO
ZZ
Control
logic
CLK
DQ[a,b,c,d] 32/36
D
Data
Input
Q
Register
CLK
• 3.3 core power supply
• 2.5V or 3.3V I/O operation with separate VDDQ
• 30 mW typical standby power
• Self-timed write cycles
• Interleaved or linear burst modes
• Snooze mode for standby operation
18
DQ
Write delay
addr. registers
CLK
18
CLK
32/36
256K x 32/36
SRAM
Array
32/36 32/36
CLK
CEN
Selection Guide
Minimum cycle time
Maximum clock access time
Maximum operating current
Maximum standby current
Maximum CMOS standby current (DC)
32/36
Output
Buffer
OE
32/36
OE
DQ[a,b,c,d]
-75 -85 -10 Units
8.5 10 12 ns
7.5 8.5 10 ns
300 280 240 mA
120 110 100 mA
30 30 30 mA
11/8/04, v. 1.1
Alliance Semiconductor
P. 1 of 18
Copyright © Alliance Semiconductor. All rights reserved.




Alliance Semiconductor Corporation

AS7C33256NTF32A Datasheet Preview

AS7C33256NTF32A Datasheet

(AS7C33256NTF32A / AS7C33256NTF36A) 3.3V 256K x 2/36 Flowthrough Synchronous SRAM

No Preview Available !

8 Mb Synchronous SRAM products list1,2
Org Part Number
512KX18
AS7C33512PFS18A
256KX32
AS7C33256PFS32A
256KX36
AS7C33256PFS36A
512KX18
AS7C33512PFD18A
256KX32
AS7C33256PFD32A
256KX36
AS7C33256PFD36A
512KX18
AS7C33512FT18A
www.DataSheet4U.co2m56KX32
256KX36
AS7C33256FT32A
AS7C33256FT36A
512KX18
AS7C33512NTD18A
256KX32
AS7C33256NTD32A
256KX36
AS7C33256NTD36A
512KX18
AS7C33512NTF18A
256KX32
AS7C33256NTF32A
256KX36
AS7C33256NTF36A
1 Core Power Supply: VDD = 3.3V + 0.165V
2 I/O Supply Voltage: VDDQ = 3.3V + 0.165V for 3.3V I/O
VDDQ = 2.5V + 0.125V for 2.5V I/O
®
Mode
PL-SCD
PL-SCD
PL-SCD
PL-DCD
PL-DCD
PL-DCD
FT
FT
FT
NTD-PL
NTD-PL
NTD-PL
NTD-FT
NTD-FT
NTD-FT
PL-SCD : Pipelined Burst Synchronous SRAM - Single Cycle Deselect
PL-DCD : Pipelined Burst Synchronous SRAM - Double Cycle Deselect
FT : Flow-through Burst Synchronous SRAM
NTD1-PL : Pipelined Burst Synchronous SRAM with NTDTM
NTD-FT : Flow-through Burst Synchronous SRAM with NTDTM
AS7C33256NTF32A
AS7C33256NTF36A
Speed
166/133 MHz
166/133 MHz
166/133 MHz
166/133 MHz
166/133 MHz
166/133 MHz
7.5/8.5/10 ns
7.5/8.5/10 ns
7.5/8.5/10 ns
166/133 MHz
166/133 MHz
166/133 MHz
7.5/8.5/10 ns
7.5/8.5/10 ns
7.5/8.5/10 ns
1. NTD: No Turnaround Delay. NTDTM is a trademark of Alliance Semiconductor Corporation. All trademarks mentioned in this document are the property
of their respective owners.
11/8/04, v. 1.1
Alliance Semiconductor
P. 2 of 18


Part Number AS7C33256NTF32A
Description (AS7C33256NTF32A / AS7C33256NTF36A) 3.3V 256K x 2/36 Flowthrough Synchronous SRAM
Maker Alliance Semiconductor Corporation
Total Page 18 Pages
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Alliance Semiconductor Corporation





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