X28VC256 データシートの表示（PDF） - Xicor -> Intersil
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X28VC256 Datasheet PDF : 24 Pages
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X28VC256
POWER-UP TIMING
Symbol
tPUR(3)
tPUW(3)
Parameter
Power-Up to Read
Power-Up to Write
CAPACITANCE TA = +25°C, f = 1MHZ, VCC = 5V.
Symbol
Test
CI/O(3)
CIN(3)
Input/Output Capacitance
Input Capacitance
Max.
100
5
Max.
10
6
Units
pF
pF
Units
µs
ms
3869 PGM T05
Conditions
VI/O = 0V
VIN = 0V
3869 PGM T06.1
ENDURANCE AND DATA RETENTION
Parameter
Endurance
Data Retention
Min.
100,000
100
Max.
Units
Cycles
Years
3869 PGM T07.3
A.C. CONDITIONS OF TEST
Input Pulse Levels
Input Rise and
Fall Times
Input and Output
Timing Levels
0V to 3V
5ns
1.5V
3869 PGM T08.1
MODE SELECTION
CE OE WE
L
L
H
L
H
L
H
X
X
X
L
X
X
X
H
Mode
Read
Write
Standby and Write Inhibit
Write Inhibit
Write Inhibit
I/O Power
DOUT
DIN
High Z
—
—
Active
Active
Standby
—
—
3869 PGM T09
Note: (3) This parameter is periodically sampled and not 100%
tested.
EQUIVALENT A.C. LOAD CIRCUIT
SYMBOL TABLE
WAVEFORM INPUTS
OUTPUTS
5V
1.92KΩ
OUTPUT
1.37KΩ
30pF
3869 FHD F20.3
Must be
steady
May change
from LOW
to HIGH
May change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
N/A
Will be
steady
Will change
from LOW
to HIGH
Will change
from HIGH
to LOW
Changing:
State Not
Known
Center Line
is High
Impedance
11
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