X28HC256 Xicor, X28HC256 Datasheet - Page 12

• Manufacturer Part Number: X28HC256
• Description: 5 Volt/ Byte Alterable E2PROM
• Manufacturer: Xicor

X28HC256
A.C. CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.)
Read Cycle Limits
Read Cycle
Notes: (4)
Symbol
t
t
t
t
t
t
t
t
t
ADDRESS
RC (5)
CE (5)
AA (5)
OE
LZ (4)
OLZ (4)
HZ (4)
OHZ (4)
OH
DATA I/O
(5)
WE
OE
CE
Read Cycle Time
Chip Enable Access Time
Address Access Time
Output Enable Access Time
CE LOW to Active Output
OE LOW to Active Output
CE HIGH to High Z Output
OE HIGH to High Z Output
Output Hold From Address Change
t
from the point whin CE, OE return HIGH (whichever occurs first) to the time when the outputs are no longer driven.
For faster 256K products, refer to X28VC256 product line.
LZ
min., t
V IH
HIGH Z
HZ
, t
OLZ
Parameter
min. and t
t LZ
OHZ
t OLZ
t CE
are periodically sampled and not 100% tested, t
t OE
t RC
X28HC256-70 X28HC256-90 X28HC256-12 X28HC256-15
Min.
70
0
0
0
DATA VALID
Max.
12
35
35
35
70
70
Min.
90
0
0
0
Max.
90
90
40
40
40
t OH
t AA
HZ
120
Min.
and t
0
0
0
OHZ
120
120
Max.
50
50
50
are measured, with CL = 5pF,
DATA VALID
150
Min. Max. Units
0
0
0
t HZ
150
150
50
50
50
3859 FHD F05
3859 PGM T10.2
t OHZ
ns
ns
ns
ns
ns
ns
ns
ns
ns