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W24257Q-70L

Description
32k X 8 cmos static ram
Categorystorage    storage   
File Size103KB,10 Pages
ManufacturerWinbond Electronics Corporation
Websitehttp://www.winbond.com.tw
Download Datasheet Parametric View All

W24257Q-70L Overview

32k X 8 cmos static ram

W24257Q-70L Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerWinbond Electronics Corporation
Parts packaging codeTSOP
package instruction8 X 13.40 MM, TSOP1-28
Contacts28
Reach Compliance Code_compli
ECCN codeEAR99
Maximum access time70 ns
I/O typeCOMMON
JESD-30 codeR-PDSO-G28
JESD-609 codee0
length11.8 mm
memory density262144 bi
Memory IC TypeSTANDARD SRAM
memory width8
Number of functions1
Number of terminals28
word count32768 words
character code32000
Operating modeASYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize32KX8
Output characteristics3-STATE
Package body materialPLASTIC/EPOXY
encapsulated codeTSOP1
Encapsulate equivalent codeTSSOP28,.53,22
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE
Parallel/SerialPARALLEL
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Certification statusNot Qualified
Maximum seat height1.2 mm
Minimum standby current2 V
Maximum slew rate0.07 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.55 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width8 mm
W24257
32K
×
8 CMOS STATIC RAM
GENERAL DESCRIPTION
The W24257 is a slow speed, low power CMOS static RAM organized as 32768
×
8 bits that operates
on a single 5-volt power supply. This device is manufactured using Winbond's high performance
CMOS technology.
FEATURES
Low power consumption:
Active: 325 mW (max.)
Standby: 75
µW
(max.) (LL-version)
150
µW
(max.) (L-version)
Access time: 70 nS (max.)
Single
+5V
power supply
Fully static operation
All inputs and outputs directly TTL compatible
Three-state outputs
Battery back-up operation capability
Data retention voltage: 2V (min.)
Packaged in 28-pin 330 mil SOP,
standard type one TSOP (8 mm x 13.4 mm )
PIN CONFIGURATIONS
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
27
26
25
24
V
DD
#WE
A13
A8
A9
A11
#OE
A10
#CS
I/O8
I/O7
I/O6
I/O5
I/O4
V
SS
A0
.
.
A14
DECODER
CORE
ARRAY
28-pin
SOP
23
22
21
20
19
18
17
16
15
#CS
#OE
#WE
CONTROL
DATA I/O
I/O1
.
.
I/O8
#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/O 8
I/O 7
I/O 6
I/O 5
I/O 4
V
SS
I/O 3
I/O 2
I/O 1
A0
A1
A2
PIN DESCRIPTION
SYMBOL
A0−A14
I/O1−I/O8
#CS
#WE
#OE
V
DD
V
SS
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Select Input
Write Enable Input
Output Enable Input
Power Supply
Ground
-1-
Publication Release Date: February 2001
Revision A16
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