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W24L257A Datasheet(PDF) 2 Page - Winbond

Part No. W24L257A
Description  32K X 8 High Speed CMOS Static RAM
Download  9 Pages
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
Logo WINBOND - Winbond

W24L257A Datasheet(HTML) 2 Page - Winbond

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W24L257A
- 2 -
TRUTH TABLE
CS
OE
WE
MODE
I/O1
−I/O8
VDD CURRENT
H
X
X
Not Selected
High Z
ISB, ISB1
L
H
H
Output Disable
High Z
IDD
L
L
H
Read
Data Out
IDD
L
X
L
Write
Data In
IDD
DC CHARACTERISTICS
Absolute Maximum Ratings
PARAMETER
RATING
UNIT
Supply Voltage to VSS Potential
-0.5 to +4.6
V
Input/Output to VSS Potential
-0.5 to VDD +0.5
V
Allowable Power Dissipation
1.0
W
Storage Temperature
-65 to +150
°C
Operating Temperature
0 to +70
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
Operating Characteristics
(VDD = 3.3V
± 5%, VSS = 0V, Ta = 0 to 70° C)
PARAMETER
SYM
.
TEST CONDITIONS
MIN
.
TYP
.
MAX.
UNIT
Input Low Voltage
VIL
-
-0.5
-
+0.8
V
Input High Voltage
VIH
-
+2.0
-
VDD +0.3
V
Input Leakage Current
ILI
VIN = VSS to VDD
-10
-
+10
µA
Output Leakage
Current
ILO
VI/O = VSS to VDD, CS = VIH (min.)
or OE = VIH (min.) or WE = VIL (max.)
-10
-
+ 10
µA
Output Low Voltage
VOL
IOL = +8.0 mA
-
-
0.4
V
Output High Voltage
VOH
IOH = -4.0 mA
2.4
-
-
V
Operating Power
IDD
CS = VIL (max.), I/O = 0 mA
12
-
-
150
mA
Supply Current
Cycle = min.
15
-
-
120
mA
Duty = 100%
20
-
-
100
mA
Standby Power
Supply Current
ISB
CS = VIH (min.), Cycle = min.
Duty = 100%
-
-
20
mA
ISB1
CS
≥ VDD -0.2V
-
-
200
µA
Note: Typical characteristics are at VDD = 3.3V, Ta = 25
° C.


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