X28C64
ENDURANCE AND DATA RETENTION
Parameter
Min.
Units
Minimum Endurance
Data Retention
100,000
100
Cycles
Years
3853 PGM T05.1
POWER-UP TIMING
(1)
Symbol
Parameter
Power-up to Read Operation
Power-up to Write Operation
Typ.
Units
(3)
tPUR
100
5
µs
(3)
tPUW
ms
3853 PGM T06
CAPACITANCE TA = +25°C, f = 1MHz, VCC = 5V
Symbol
Parameter
Max.
Units
Test Conditions
(3)
CI/O
Input/Output Capacitance
Input Capacitance
10
6
pF
pF
VI/O = 0V
VIN = 0V
(3)
CIN
3853 PGM T07.1
A.C. CONDITIONS OF TEST
MODE SELECTION
Input Pulse Levels
0V to 3V
CE
L
OE
L
WE
H
Mode
I/O
DOUT
DIN
Power
Read
Write
Active
Input Rise and
Fall Times
L
H
L
Active
10ns
1.5V
H
X
X
Standby and
Write Inhibit
High Z
Standby
Input and Output
Timing Levels
3853 PGM T08.1
X
X
L
X
H
Write Inhibit
Write Inhibit
—
—
—
X
—
3853 PGM T09
EQUIVALENT A.C. LOAD CIRCUIT
SYMBOL TABLE
WAVEFORM
INPUTS
OUTPUTS
5V
Must be
steady
Will be
steady
1.92KΩ
May change
from LOW
to HIGH
Will change
from LOW
to HIGH
OUTPUT
May change
from HIGH
to LOW
Will change
from HIGH
to LOW
1.37KΩ
100pF
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance
3853 FHD F20.3
Note: (3) This parameter is periodically sampled and not 100% tested.
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