Rev. 5.00, 12/03, page 600 of 1088
CE
A
18
to A
0
I/O
7
to I/O
0
OE
WE
Other mode command write
t
ceh
t
ds
t
dh
t
f
t
r
t
nxtc
Note: Do not enable
WE
and
OE
at the same time.
t
ces
t
wep
Memory read mode
Address stable
Figure 17-23 Timing Waveforms when Entering Another Mode from Memory Read Mode
Table 17-18 AC Characteristics in Memory Read Mode
(Conditions: V
CC
= 3.3 V ±0.3 V, V
SS
= 0 V, T
a
= 25°C ±5°C)
Item
Symbol
Min
Max
Unit
Access time
t
acc
—
20
µ
s
CE
output delay time
t
ce
—
150
ns
OE
output delay time
t
oe
—
150
ns
Output disable delay time
t
df
—
100
ns
Data output hold time
t
oh
5
—
ns
CE
A
18
to A
0
I/O
7
to I/O
0
OE
WE
VIH
VIL
VIL
t
acc
t
oh
t
oh
t
acc
Address stable
Address stable
Figure 17-24 Timing Waveforms for
CE
CE
CE
CE
/
OE
OE
OE
OE
Enable State Read
Содержание H8S/2318 series
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