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W24L257AJ-20

Description
32k X 8 high speed cmos static ram
Categorystorage    storage   
File Size206KB,9 Pages
ManufacturerWinbond Electronics Corporation
Websitehttp://www.winbond.com.tw
Download Datasheet Parametric Compare View All

W24L257AJ-20 Overview

32k X 8 high speed cmos static ram

W24L257AJ-20 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
Parts packaging codeSOJ
package instruction0.300 INCH, SOJ-28
Contacts28
Reach Compliance Code_compli
ECCN codeEAR99
Maximum access time20 ns
I/O typeCOMMON
JESD-30 codeR-PDSO-J28
JESD-609 codee0
length18.03 mm
memory density262144 bi
Memory IC TypeSTANDARD SRAM
memory width8
Number of functions1
Number of ports1
Number of terminals28
word count32768 words
character code32000
Operating modeASYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize32KX8
Output characteristics3-STATE
ExportableYES
Package body materialPLASTIC/EPOXY
encapsulated codeSOJ
Encapsulate equivalent codeSOJ28,.34
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Parallel/SerialPARALLEL
Peak Reflow Temperature (Celsius)240
power supply3.3 V
Certification statusNot Qualified
Maximum seat height3.56 mm
Maximum standby current0.0002 A
Minimum standby current3.14 V
Maximum slew rate0.1 mA
Maximum supply voltage (Vsup)3.63 V
Minimum supply voltage (Vsup)2.97 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formJ BEND
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width7.62 mm
Base Number Matches1
W24L257A
32K
×
8 HIGH-SPEED CMOS STATIC RAM
GENERAL DESCRIPTION
The W24L257A is a high-speed, low-power CMOS static RAM organized as 32768
×
8 bits that
operates on a single 3.3-volt power supply. This device is manufactured using Winbond's high
performance CMOS technology.
FEATURES
High-speed access time: 12/15/20 nS (max.)
Low-power consumption:
Active: 200 mW (typ.)
Single
+3.3V
power supply
Fully static operation
All inputs and outputs directly TTL compatible
Three-state outputs
Available packages: 28-pin 300 mil SOJ,
skinny DIP and standard type one TSOP
(8 mm
×
13.4 mm)
PIN CONFIGURATION
BLOCK DIAGRAM
V
DD
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O1
I/O2
I/O3
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28-DIP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
DD
WE
A13
A8
A9
A11
OE
V
SS
A0
.
.
A14
DECODER
CORE
ARRAY
ARRAY
CS
A10
CS
I/O8
I/O7
I/O6
I/O5
I/O4
OE
WE
CONTROL
DATA I/O
I/O1
.
.
I/O8
PIN DESCRIPTION
SYMBOL
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Select Input
Write Enable Input
Output Enable Input
Power Supply
Ground
A0−A14
I/O1−I/O8
CS
WE
OE
V
DD
V
SS
OE
A11
A9
A8
A13
WE
V
DD
A14
A12
A7
A6
A5
A4
A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28-pin
TSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
CS
I/O8
I/O7
I/O6
I/O5
I/O4
V
SS
I/O3
I/O2
I/O1
A0
A1
A2
-1-
Publication Release Date: December 1996
Revision A5

W24L257AJ-20 Related Products

W24L257AJ-20 W24L257 W24L257A-12 W24L257AJ-12 W24L257AJ-15
Description 32k X 8 high speed cmos static ram 32k X 8 high speed cmos static ram 32k X 8 high speed cmos static ram 32k X 8 high speed cmos static ram 32k X 8 high speed cmos static ram
Is it Rohs certified? incompatible - - incompatible incompatible
Parts packaging code SOJ - - SOJ SOJ
package instruction 0.300 INCH, SOJ-28 - - 0.300 INCH, SOJ-28 0.300 INCH, SOJ-28
Contacts 28 - - 28 28
Reach Compliance Code _compli - - _compli _compli
ECCN code EAR99 - - EAR99 EAR99
Maximum access time 20 ns - - 12 ns 15 ns
I/O type COMMON - - COMMON COMMON
JESD-30 code R-PDSO-J28 - - R-PDSO-J28 R-PDSO-J28
JESD-609 code e0 - - e0 e0
length 18.03 mm - - 18.03 mm 18.03 mm
memory density 262144 bi - - 262144 bi 262144 bi
Memory IC Type STANDARD SRAM - - STANDARD SRAM STANDARD SRAM
memory width 8 - - 8 8
Number of functions 1 - - 1 1
Number of terminals 28 - - 28 28
word count 32768 words - - 32768 words 32768 words
character code 32000 - - 32000 32000
Operating mode ASYNCHRONOUS - - ASYNCHRONOUS ASYNCHRONOUS
Maximum operating temperature 70 °C - - 70 °C 70 °C
organize 32KX8 - - 32KX8 32KX8
Output characteristics 3-STATE - - 3-STATE 3-STATE
Package body material PLASTIC/EPOXY - - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOJ - - SOJ SOJ
Encapsulate equivalent code SOJ28,.34 - - SOJ28,.34 SOJ28,.34
Package shape RECTANGULAR - - RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE - - SMALL OUTLINE SMALL OUTLINE
Parallel/Serial PARALLEL - - PARALLEL PARALLEL
Peak Reflow Temperature (Celsius) 240 - - NOT SPECIFIED NOT SPECIFIED
power supply 3.3 V - - 3.3 V 3.3 V
Certification status Not Qualified - - Not Qualified Not Qualified
Maximum seat height 3.56 mm - - 3.56 mm 3.56 mm
Maximum standby current 0.0002 A - - 0.0002 A 0.0002 A
Minimum standby current 3.14 V - - 3.14 V 3.14 V
Maximum slew rate 0.1 mA - - 0.15 mA 0.12 mA
Maximum supply voltage (Vsup) 3.63 V - - 3.465 V 3.63 V
Minimum supply voltage (Vsup) 2.97 V - - 3.135 V 2.97 V
Nominal supply voltage (Vsup) 3.3 V - - 3.3 V 3.3 V
surface mount YES - - YES YES
technology CMOS - - CMOS CMOS
Temperature level COMMERCIAL - - COMMERCIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) - - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form J BEND - - J BEND J BEND
Terminal pitch 1.27 mm - - 1.27 mm 1.27 mm
Terminal location DUAL - - DUAL DUAL
Maximum time at peak reflow temperature 30 - - NOT SPECIFIED NOT SPECIFIED
width 7.62 mm - - 7.62 mm 7.62 mm
Base Number Matches 1 - - 1 1
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