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AS7C33256NTF18B-65TQCN

Description
ZBT SRAM, 256KX18, 6.5ns, CMOS, PQFP100, 14 X 20 MM, LEAD FREE, TQFP-100
Categorystorage    storage   
File Size427KB,18 Pages
ManufacturerALSC [Alliance Semiconductor Corporation]
Environmental Compliance
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AS7C33256NTF18B-65TQCN Overview

ZBT SRAM, 256KX18, 6.5ns, CMOS, PQFP100, 14 X 20 MM, LEAD FREE, TQFP-100

AS7C33256NTF18B-65TQCN 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 Codeunknown
ECCN code3A991.B.2.A
Is SamacsysN
Maximum access time6.5 ns
Other featuresFLOW-THROUGH ARCHITECTURE
Maximum clock frequency (fCLK)133 MHz
I/O typeCOMMON
JESD-30 codeR-PQFP-G100
JESD-609 codee3/e6
length20 mm
memory density4718592 bit
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)260
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 rate0.25 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 surfacePURE MATTE TIN/TIN BISMUTH
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationQUAD
Maximum time at peak reflow temperature40
width14 mm
Base Number Matches1
February 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: 6.5/7.5/8.0/10.0 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
–65
Minimum cycle time
Maximum clock access time
Maximum operating current
Maximum standby current
Maximum CMOS standby current (DC)
7.5
6.5
290
120
30
-75
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
2/8/05, v 1.2
Alliance Semiconductor
P. 1 of 18
Copyright © Alliance Semiconductor. All rights reserved.

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AS7C33256NTF18B-65TQCN AS7C33256NTF18B-65TQIN AS7C33256NTF18B-65TQI AS7C33256NTF18B-65TQC
Description ZBT SRAM, 256KX18, 6.5ns, CMOS, PQFP100, 14 X 20 MM, LEAD FREE, TQFP-100 ZBT SRAM, 256KX18, 6.5ns, CMOS, PQFP100, 14 X 20 MM, LEAD FREE, TQFP-100 ZBT SRAM, 256KX18, 6.5ns, CMOS, PQFP100, 14 X 20 MM, TQFP-100 ZBT SRAM, 256KX18, 6.5ns, CMOS, PQFP100, 14 X 20 MM, TQFP-100
Is it Rohs certified? conform to conform to incompatible incompatible
Maker ALSC [Alliance Semiconductor Corporation] ALSC [Alliance Semiconductor Corporation] ALSC [Alliance Semiconductor Corporation] ALSC [Alliance Semiconductor Corporation]
Parts packaging code QFP QFP QFP QFP
package instruction LQFP, QFP100,.63X.87 LQFP, QFP100,.63X.87 LQFP, QFP100,.63X.87 LQFP, QFP100,.63X.87
Contacts 100 100 100 100
Reach Compliance Code unknown unknown unknown unknown
ECCN code 3A991.B.2.A 3A991.B.2.A 3A991.B.2.A 3A991.B.2.A
Maximum access time 6.5 ns 6.5 ns 6.5 ns 6.5 ns
Other features FLOW-THROUGH ARCHITECTURE FLOW-THROUGH ARCHITECTURE FLOW-THROUGH ARCHITECTURE FLOW-THROUGH ARCHITECTURE
Maximum clock frequency (fCLK) 133 MHz 133 MHz 133 MHz 133 MHz
I/O type COMMON COMMON COMMON COMMON
JESD-30 code R-PQFP-G100 R-PQFP-G100 R-PQFP-G100 R-PQFP-G100
JESD-609 code e3/e6 e3/e6 e0 e0
length 20 mm 20 mm 20 mm 20 mm
memory density 4718592 bit 4718592 bit 4718592 bit 4718592 bit
Memory IC Type ZBT SRAM ZBT SRAM ZBT SRAM ZBT SRAM
memory width 18 18 18 18
Number of functions 1 1 1 1
Number of terminals 100 100 100 100
word count 262144 words 262144 words 262144 words 262144 words
character code 256000 256000 256000 256000
Operating mode SYNCHRONOUS SYNCHRONOUS SYNCHRONOUS SYNCHRONOUS
Maximum operating temperature 70 °C 85 °C 85 °C 70 °C
organize 256KX18 256KX18 256KX18 256KX18
Output characteristics 3-STATE 3-STATE 3-STATE 3-STATE
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code LQFP LQFP LQFP LQFP
Encapsulate equivalent code QFP100,.63X.87 QFP100,.63X.87 QFP100,.63X.87 QFP100,.63X.87
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form FLATPACK, LOW PROFILE FLATPACK, LOW PROFILE FLATPACK, LOW PROFILE FLATPACK, LOW PROFILE
Parallel/Serial PARALLEL PARALLEL PARALLEL PARALLEL
power supply 2.5/3.3,3.3 V 2.5/3.3,3.3 V 2.5/3.3,3.3 V 2.5/3.3,3.3 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.6 mm 1.6 mm 1.6 mm 1.6 mm
Maximum standby current 0.03 A 0.03 A 0.03 A 0.03 A
Minimum standby current 3.14 V 3.14 V 3.14 V 3.14 V
Maximum slew rate 0.25 mA 0.25 mA 0.25 mA 0.25 mA
Maximum supply voltage (Vsup) 3.465 V 3.465 V 3.465 V 3.465 V
Minimum supply voltage (Vsup) 3.135 V 3.135 V 3.135 V 3.135 V
Nominal supply voltage (Vsup) 3.3 V 3.3 V 3.3 V 3.3 V
surface mount YES YES YES YES
technology CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL INDUSTRIAL INDUSTRIAL COMMERCIAL
Terminal surface PURE MATTE TIN/TIN BISMUTH PURE MATTE TIN/TIN BISMUTH Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.65 mm 0.65 mm 0.65 mm 0.65 mm
Terminal location QUAD QUAD QUAD QUAD
width 14 mm 14 mm 14 mm 14 mm
Base Number Matches 1 1 1 -
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