Renesas F-ZTAT H8 Series, Hardware Manual

Page: 182 / 562

6. ROM
Rev.3.00 Jul. 19, 2007 page 156 of 532
REJ09B0397-0300
Table 6.13 AC Characteristics in Transition from Memory Read Mode to Another Mode
(Conditions: V
CC
= 5.0 V
±
10
%
, V
SS
= 0 V, T
a
= 25°C
±
5°C)
Item Symbol Min Max Unit Notes
Command write cycle t
nxtc
20
⎯ μ
s
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
CE
ADDRESS
DATA H'XX
OE
WE
XX mode command write
t
wep
t
ceh
t
dh
t
ds
t
nxtc
Note: Do not enable
WE
and
OE
simultaneously.
t
ces
ADDRESS STABLE
DATA
t
f
t
r
Figure 6.18 Timing Waveforms in Transition from Memory Read Mode to Another Mode