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X28HC64
Power-up Timing
Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits
established by characterization and are not production tested.
TYP
PARAMETER
Power-up to Read Operation (Note 5)
Power-up to Write Operation (Note 5)
Capacitance
T A = +25°C, f = 1MHz, V CC = 5V
SYMBOL
t PUR
t PUW
(Note 3)
100
5
UNIT
μs
ms
PARAMETER
Input/output Capacitance (Note 5)
Input Capacitance (Note 5)
SYMBOL
C I/O
C IN
TEST CONDITIONS
V I/O = 0V
V IN = 0V
MAX
10
6
UNIT
pF
pF
NOTE:
5. This parameter is periodically sampled and not 100% tested.
Symbol Table
TABLE 2. AC CONDITIONS OF TEST
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Levels
0V to 3V
5ns
1.5V
WAVEFORM
INPUTS
Must be
steady
OUTPUTS
Will be
steady
Ma y change
from LO W
Will change
from LO W
TABLE 3. MODE SELECTION
to HIGH
to HIGH
CE
L
L
H
OE
L
H
X
WE
H
L
X
MODE
Read
Write
Standby and write
I/O
D OUT
D IN
High Z
POWER
Active
Active
Standby
Ma y change
from HIGH
to LO W
Don’t Care:
Changes
Allowed
Will change
from HIGH
to LO W
Changing:
State Not
Known
inhibit
N/A
Center Line
is High
X
X
L
X
X
H
Write inhibit
Write inhibit
—
—
—
—
Impedance
Equivalent AC Load Circuits
5V
1.92k Ω
OUTPUT
1.37k Ω
10
30pF
FN8109.2
August 28, 2009
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