Instruction Manual
Preliminary W24L257
- 2 -
TRUTH TABLE
CS
OE
WE
MODE
I/O1
−
I/O8
V
DD CURRENT
H X X Not Selected High Z I
SB
, I
SB1
L H H Output Disable High Z I
DD
L L H Read Data Out I
DD
L X L Write Data In I
DD
DC CHARACTERISTICS
Absolute Maximum Ratings
PARAMETER RATING UNIT
Supply Voltage to V
SS
Potential -0.5 to +4.6 V
Input/Output to V
SS
Potential -0.5 to V
DD
+0.5 V
Allowable Power Dissipation 1.0 W
Storage Temperature -65 to +150
°
C
Operating Temperature LL 0 to 70
°
C
LE -20 to 85
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
Operating Characteristics
(VDD = 3.0V to 3.6V; VSS = 0V; TA (
°
C) = 0 to 70 for LL, -20 to 85 for LE)
PARAMETER SYM. TEST CONDITIONS MIN. MAX. UNIT
Input Low Voltage V
IL
- -0.5 +0.6 V
Input High Voltage V
IH
- +2.0 V
DD
+0.5 V
Input Leakage Current I
LI
VIN = V
SS
to V
DD
-1 +1
µ
A
Output Leakage Current I
LO
VI/O = V
SS
to V
DD
,
CS
= V
IH
(min.) or
OE = V
IH
(min.) or
WE
= V
IL
(max.)
-1
+1
µ
A
Output Low Voltage V
OL
IOL = +2.1 mA - 0.4 V
Output High Voltage V
OH
IOH = -1.0 mA 2.2 - V
Operating Power Supply
Current
I
DD
CS
= V
IL
(max.) and
I/O = 0 mA,
Cycle = min. Duty = 100%
-
35
mA