X28HC256 Datasheet, PDF (11/24 Pages) Xicor Inc. – 5 Volt, Byte Alterable E2PROM

X28HC256
POWER-UP TIMING
Symbol
tPUR(3)
tPUW(3)
Parameter
Power-Up to Read
Power-Up to Write
Max.
100
5
Units
µs
ms
3859 PGM T05
CAPACITANCE T_A = +25°C, f = 1MHz, V_CC = 5V.
Symbol
Test
CI/O(9)
C_IN(9)
Input/Output Capacitance
Input Capacitance
Max.
10
6
Units
pF
pF
Conditions
VI/O = 0V
V_IN = 0V
3859 PGM T06.2
ENDURANCE AND DATA RETENTION
Parameter
Endurance
Data Retention
Min.
100,000
100
Max.
Units
Cycles
Years
3859 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
3859 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
D_OUT
DIN
High Z
—
—
Active
Active
Standby
—
—
3859 PGM T09
Note: (3) This parameter is periodically sampled and not 100%
tested.
EQUIVALENT A.C. LOAD CIRCUIT
5V
OUTPUT
1.92KΩ
1.37KΩ
30pF
3859 FHD F20.3
SYMBOL TABLE
WAVEFORM INPUTS
OUTPUTS
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