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A
to A
18
0
CE
OE
WE
I/O
to I/O
7
0
Note: Do not enable WE and OE at the same time.
Figure 17-53 Timing Waveforms when Entering Another Mode from Memory Read Mode
Table 17-39 AC Characteristics in Memory Read Mode
(Conditions: V
Item
Access time
CE output delay time
OE output delay time
Output disable delay time
Data output hold time
A
to A
18
0
CE
VIL
OE
VIL
WE
VIH
I/O
to I/O
7
0
Figure 17-54 Timing Waveforms for CE
Memory read mode
Address stable
= 3.3 V ±0.3 V, V
CC
Symbol
Min
t
—
acc
t
—
ce
t
—
oe
t
—
df
t
5
oh
Address stable
t
acc
Other mode command write
t
t
nxtc
ces
t
f
= 0 V, T
= 25°C ±5°C)
SS
a
Max
20
150
150
100
—
Address stable
t
acc
t
oh
CE/OE
OE Enable State Read
CE
CE
OE
OE
Rev. 5.00, 12/03, page 655 of 1088
t
ceh
t
wep
t
r
t
t
ds
dh
Unit
µs
ns
ns
ns
ns
t
oh
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