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AS7C33256NTF18B-80TQCN

Description
3.3V 256K x 18 Flowthrough Synchronous SRAM with NTD
Categorystorage    storage   
File Size409KB,18 Pages
ManufacturerALSC [Alliance Semiconductor Corporation]
Environmental Compliance
Download Datasheet Parametric View All

AS7C33256NTF18B-80TQCN Overview

3.3V 256K x 18 Flowthrough Synchronous SRAM with NTD

AS7C33256NTF18B-80TQCN Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerALSC [Alliance Semiconductor Corporation]
Parts packaging codeQFP
package instructionLQFP, QFP100,.63X.87
Contacts100
Reach Compliance Codeunknow
ECCN code3A991.B.2.A
Maximum access time8 ns
Other featuresFLOW-THROUGH ARCHITECTURE
Maximum clock frequency (fCLK)100 MHz
I/O typeCOMMON
JESD-30 codeR-PQFP-G100
JESD-609 codee3
length20 mm
memory density4718592 bi
Memory IC TypeZBT SRAM
memory width18
Number of functions1
Number of terminals100
word count262144 words
character code256000
Operating modeSYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize256KX18
Output characteristics3-STATE
Package body materialPLASTIC/EPOXY
encapsulated codeLQFP
Encapsulate equivalent codeQFP100,.63X.87
Package shapeRECTANGULAR
Package formFLATPACK, LOW PROFILE
Parallel/SerialPARALLEL
Peak Reflow Temperature (Celsius)245
power supply2.5/3.3,3.3 V
Certification statusNot Qualified
Maximum seat height1.6 mm
Maximum standby current0.03 A
Minimum standby current3.14 V
Maximum slew rate0.2 mA
Maximum supply voltage (Vsup)3.465 V
Minimum supply voltage (Vsup)3.135 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationQUAD
Maximum time at peak reflow temperature30
width14 mm
April 2005
®
AS7C33256NTF18B
3.3V 256K x 18 Flowthrough Synchronous SRAM with NTD
TM
Features
Organization: 262,144 words × 18 bits
NTD
architecture for efficient bus operation
Fast clock to data access: 7.5/8.0/10.0 ns
Fast OE access time: 3.5/4.0 ns
Fully synchronous operation
Flow-through mode
Asynchronous output enable control
Available in 100-pin TQFP package
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 V
DDQ
Self-timed write cycles
Interleaved or linear burst modes
Snooze mode for standby operation
Logic block diagram
A[17:0]
18
D
Address
register
burst logic
Q
18
CLK
CE0
CE1
CE2
R/W
BWa
BWb
ADV / LD
LBO
ZZ
CLK
D
Q
18
Write delay
addr. registers
CLK
Control
logic
CLK
Write Buffer
256K x 18
SRAM
array
DQ [a,b]
18
D
Data
Q
input
register
CLK
18
18
18
18
CLK
CEN
OE
Output
buffer
18
OE
DQ [a,b]
Selection guide
-75
Minimum cycle time
Maximum clock access time
Maximum operating current
Maximum standby current
Maximum CMOS standby current (DC)
8.5
7.5
260
110
30
-80
10
8.0
230
100
30
-10
12
10
200
90
30
Units
ns
ns
mA
mA
mA
4/13/05, v 1.3
Alliance Semiconductor
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Copyright © Alliance Semiconductor. All rights reserved.
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