X28C256D Xicor, X28C256D Datasheet - Page 11

• Manufacturer Part Number: X28C256D
• Description: 5 Volt/ Byte Alterable E2PROM
• Manufacturer: Xicor

X28C256
ENDURANCE AND DATA RETENTION
POWER-UP TIMING
CAPACITANCE T
A.C. CONDITIONS OF TEST
Note: (4) This parameter is periodically sampled and not 100% tested.
EQUIVALENT A.C. LOAD CIRCUIT
Input Pulse Levels
Input Rise and
Fall Times
Input and Output
Timing Levels
Symbol
Symbol
t
t
PUR
PUW (4)
C
C
I/O (4)
IN (4)
(4)
OUTPUT
Endurance
Data Retention
Parameter
1.37K
A
= +25 C, f = 1MHz, V
5V
1.92K
Power-up to Read Operation
Power-up to Write Operation
Input/Output Capacitance
Input Capacitance
0V to 3V
10ns
1.5V
3855 PGM T08.1
Parameter
Parameter
100pF
3855 FHD F22.3
CC
MODE SELECTION
= 5V
CE
H
X
X
L
L
100,000
Min.
100
11
OE
H
X
X
L
L
SYMBOL TABLE
WE
H
X
X
H
L
WAVEFORM
Max.
10
6
Read
Write
Standby and
Write Inhibit
Write Inhibit
Write Inhibit
Max.
100
Mode
5
Units
INPUTS
Must be
steady
May change
from LOW
to HIGH
May change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
N/A
pF
pF
D
D
High Z
Test Conditions
Cycles
Years
Units
OUT
IN
I/O
—
—
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
V
V
I/O
IN
Units
ms
= 0V
s
= 0V
Active
Active
Standby
3855 PGM T05.3
3855 PGM T07.1
Power
3855 PGM T06
3855 PGM T09
—
—