X28HC256DI-12 INTERSIL [Intersil Corporation], X28HC256DI-12 Datasheet - Page 12

• Manufacturer Part Number: X28HC256DI-12
• Description: 5 Volt, Byte Alterable EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

A.C. CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.)
Read Cycle Limits
Read Cycle
Notes: (4) t
Symbol
t
t
t
t
t
t
OHZ
t
OLZ
RC
CE
AA
HZ
LZ
t
t
Data I/O
Address
OH
OE
(4)
(5)
(5)
(5)
(4)
(4)
(4)
(5) For faster 256K products, refer to X28VC256 product line.
WE
OE
CE
point when CE, OE return HIGH (whichever occurs first) to the time when the outputs are no longer driven.
LZ
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
min., t
V
HIGH Z
IH
HZ
, t
OLZ
Parameter
min. and t
12
OHZ
t
LZ
t
OLZ
t
are periodically sampled and not 100% tested, t
CE
t
OE
t
RC
X28HC256-70 X28HC256-90 X28HC256-12 X28HC256-15
Min.
70
0
0
0
X28HC256
Data Valid
Max.
70
70
35
35
35
Min.
90
0
0
0
Max.
t
t
90
90
40
40
40
OH
AA
HZ
and t
Min.
120
0
0
0
OHZ
are measured with CL = 5pF, from the
Max.
120
120
50
50
50
Data Valid
Min.
150
0
0
0
t
HZ
Max.
150
150
50
50
50
t
OHZ
May 17, 2006
FN8108.1
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns