X20C16
A.C. CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified)
Read Cycle Limits
X20C16-35
–40 to +85°C
X20C16-45
Min. Max.
X20C16-55
Min. Max.
Symbol
Parameter
Read cycle time
Min.
Max.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
35
45
55
RC
t
Chip enable access time
35
35
20
45
45
25
55
55
30
CE
t
Address access time
AA
OE
t
Output enable access time
Chip enable to output in low Z
Output enable to output in low Z
Chip disable to output in high Z
Output disable to output in high Z
Output hold from address change
(3)
t
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
LZ
(3)
t
OLZ
(3)
t
15
15
20
20
25
25
HZ
(3)
t
OHZ
t
OH
Note: (3) t min., t , t
min., and t
are periodically sampled and not 100ꢀ tested. t max. and t
max. are measured, with C = 5pF,
LZ
HZ OLZ
OHZ
HZ
OHZ L
from the point when CE or OE return HIGH (whichever occurs first) to the time when the outptus are no longer driven.
Read Cycle
t
RC
Address
CE
t
CE
t
OE
OE
WE
t
t
OLZ
OHZ
t
t
HZ
LZ
t
OH
Data Valid
Data Valid
Data I/O
t
AA
Characteristics subject to change without notice. 7 of 21
REV 1.0 6/21/00
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