Rev. 1.0, 02/00, page 161 of 1141
Table 7.13
AC Characteristics in Memory Read Mode (2)
−−−−
Preliminary
−−−−
Conditions: V
CC
= 5.0 V
±
10%, V
SS
= 0 V, Ta = 25
°
C
±
5
°
C
Item
Symbol
Min
Max
Unit
Notes
Access time
t
acc
20
µ
s
&(
output delay time
t
ce
150
ns
2(
output delay time
t
oe
150
ns
Output disable delay time
t
df
100
ns
Data output hold time
t
oh
5
ns
CE
A18 to A0
IO7 to IO0
VIL
VIL
VIH
OE
WE
t
acc
t
oh
t
oh
t
acc
ADDRESS STABLE
ADDRESS STABLE
DATA
DATA
Figure 7.18 Timing Waveforms for
&(
&(
&(
&(
/
2(
2(
2(
2(
Enable State Read
CE
A18 to A0
IO7 to IO0
VIH
OE
WE
t
ce
t
acc
t
oe
t
oh
t
oh
t
df
t
ce
t
acc
t
oe
ADDRESS STABLE
ADDRESS STABLE
DATA
DATA
t
df
Figure 7.19 Timing Waveforms for
&(
&(
&(
&(
/
2(
2(
2(
2(
Clocked Read