Справочник Пользователя для Hitachi H8/3692
Rev. 71, 07/01, page 99 of 372
Table 7-9
AC Characteristics in Transition from Memory Read Mode to Another Mode
(Conditions: V
(Conditions: V
CC
= 5.0 V ±0.5 V, V
SS
= 0 V, T
a
= 25°C ±5°C)
Item
Symbol
Min
Max
Unit
Notes
Command write cycle
t
nxtc
20
—
µs
Figure 7-7
CE
hold time
t
ceh
0
—
ns
CE
setup time
t
ces
0
—
ns
Data hold time
t
dh
50
—
ns
Data setup time
t
ds
50
—
ns
Write pulse width
t
wep
70
—
ns
WE
rise time
t
r
—
30
ns
WE
fall time
t
f
—
30
ns
A15–A0
I/O7–I/O0
Note:
Do not enable
and
at the same time.
t
ceh
t
wep
t
f
t
r
t
ces
t
nxtc
Address stable
t
ds
t
dh
Other mode command write
Memory read mode
Figure 7-7 Timing Waveforms in Transition from Memory Read Mode to Another Mode
Table 7-10 AC Characteristics in Memory Read Mode (Conditions: V
CC
= 5.0 V ±0.5 V,
V
SS
= 0 V, T
a
= 25°C ±5°C)
Item
Symbol
Min
Max
Unit
Notes
Access time
t
acc
—
20
µs
Figure 7-8
CE
output delay time
t
ce
—
150
ns
and 7-9
OE
output delay time
t
oe
—
150
ns
Output disable delay time
t
df
—
100
ns
Data output hold time
t
oh
5
—
ns