X28HC64
ENDURANCE AND DATA RETENTION
Parameter
Minimum Endurance
Data Retention
POWER-UP TIMING
Symbol
t
PUR(3)
t
PUW(3)
Parameter
Power-up to Read Operation
Power-up to Write Operation
Typ.
(1)
100
5
Units
µs
ms
3857 PGM T06
Min.
100,000
100
Max.
Unit
Cycles
Years
3857 PGM T05.3
CAPACITANCE
T
A
= +25°C, f = 1MHz, V
CC
= 5V
Symbol
C
I/O(3)
C
IN(3)
Parameter
Input/Output Capacitance
Input Capacitance
MODE SELECTION
CE
L
L
H
X
X
OE
L
H
X
L
X
WE
H
L
X
X
H
Mode
Read
Write
Standby and
Write Inhibit
Write Inhibit
Write Inhibit
I/O
D
OUT
D
IN
High Z
—
—
Power
Active
Active
Standby
—
—
3857 PGM T09
Max.
10
6
Units
pF
pF
Test Conditions
V
I/O
= 0V
V
IN
= 0V
3857 PGM T07.1
A.C. CONDITIONS OF TEST
Input Pulse Levels
Input Rise and
Fall Times
Input and Output
Timing Levels
0V to 3V
5ns
1.5V
3857 PGM T08.1
Note:
(3) This parameter is periodically sampled and not 100% tested.
EQUIVALENT A.C. LOAD CIRCUITS
5V
SYMBOL TABLE
WAVEFORM
INPUTS
Must be
steady
May change
from LOW
to HIGH
May change
from HIGH
to LOW
OUTPUTS
Will be
steady
Will change
from LOW
to HIGH
Will change
from HIGH
to LOW
Changing:
State Not
Known
Center Line
is High
Impedance
1.92KΩ
OUTPUT
1.37KΩ
30pF
3857 FHD F22.3
Don’t Care:
Changes
Allowed
N/A
11
XICOR [ XICOR INC. ]
