Renesas ZTAT H8S/2357F, Hardware Manual

Page: 680 / 1047

Rev.6.00 Oct.28.2004 page 652 of 1016
REJ09B0138-0600H
Table 19-43 AC Characteristics when Entering Another Mode from Memory Read Mode
Conditions: V
CC
= 5.0 V
±
10%, V
SS
= 0 V, T
a
= 25
°
C
±
5
°
C
Item Symbol Min Max Unit
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
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 19-56 Timing Waveforms when Entering Another Mode from Memory Read Mode
Table 19-44 AC Characteristics in Memory Read Mode
Conditions: V
CC
= 5.0 V
±
10%, 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