Preliminary W24256
TRUTH TABLE
MODE
VDD CURRENT
I/O1
High Z
High Z
-I/O8
CS
H
L
OE
X
WE
X
SB SB
Not Selected
Output Disable
Read
I
I
I
I
, I
1
DD
H
H
DD
DD
L
L
H
Data Out
Data In
L
X
L
Write
DC CHARACTERISTICS
Absolute Maximum Ratings
PARAMETER
RATING
UNIT
V
SS
Supply Voltage to V Potential
-0.5 to +7.0
SS
DD
Input/Output to V Potential
-0.5 to V +0.5
V
Allowable Power Dissipation
Storage Temperature
1.0
W
-65 to +150
0 to 70
°
C
Operating Temperature
°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 = 5V 10%; VSS = 0V; TA = 0 C to 70 C)
±
°
°
PARAMETER
Input Low Voltage
SYM.
TEST CONDITIONS
MIN. TYP.*
MAX.
+0.8
DD
UNIT
V
IL
V
-
-
-0.5
+2.2
-5
-
-
-
-
IH
V
Input High Voltage
V
+1
V
LI
IN
SS
DD
Input Leakage Current
Output Leakage Current
I
V
= V to V
+5
+5
m
A
LO
I
-5
m
A
CS
SS
DD
IH
= V
VI/O = V to V
,
OE
IH
= V (min.) or
(min.) or
WE
IL
= V (max.)
OL
OL
Output Low Voltage
Output High Voltage
Operating Power
Supply Current
V
I
I
= +2.1 mA
OH
= -1.0 mA
-
2.4
-
-
-
-
0.4
-
V
OH
V
V
DD
I
60
mA
IL
CS
= V (max.), I/O = 0 mA ,
Cycle = min , Duty = 100 %
SB
I
Standby Power Supply
Current
-
-
3
mA
IH
CS
= V (min.), Cycle = min.
Duty = 100%
SB1
I
L
-
-
-
-
100
50
m
A
DD
V
CS ³
-0.2V
LL
m
A
Note: Typical parameter is measured under ambient temperature TA = 25 C and VDD = 5V.
°
- 2 -
WINBOND [ WINBOND ]
