X28HC64
A.C. CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Read Cycle Limits
X28HC64-70 X28HC64-90 X28HC64-12
–55°Cto+125°C –55°Cto+125°C –55°Cto+125°C
Symbol
Parameter
Min. Max. Min. Max. Min. Max. Units
t
t
t
t
t
t
t
t
t
Read Cycle Time
70
90
120
ns
ns
ns
ns
ns
ns
ns
ns
ns
RC
CE
AA
OE
Chip Enable Access Time
Address Access Time
70
70
35
90
90
40
120
120
50
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
(4)
0
0
0
0
0
0
LZ
(4)
OLZ
(4)
30
30
30
30
30
30
HZ
(4)
OHZ
OH
Output Hold from
Address Change
0
0
0
3857 PGM T10.1
Read Cycle
t
RC
ADDRESS
CE
t
CE
t
OE
OE
V
IH
WE
t
t
OLZ
OHZ
t
t
t
LZ
OH
HZ
HIGH Z
DATA I/O
DATA VALID
DATA VALID
t
AA
3857 FHD F05
Notes: (4) t min., t , t
LZ HZ OLZ
min., and t
are periodically sampled and not 100% tested. t max. and t
HZ
max. are measured from the
OHZ
OHZ
point when CE or OE return HIGH (whichever occurs first) to the time when the outputs are no longer driven.
12
XICOR [ XICOR INC. ]
