Rev. 1.0, 02/00, page 160 of 1141
Table 7.12
AC Characteristics when Entering Another Mode from Memory Read Mode
−−−−
Preliminary
−−−−
Conditions: V
CC
= 5.0 V
±
10%, V
SS
= 0 V, Ta = 25
°
C
±
5
°
C
Item
Symbol
Min
Max
Unit
Notes
Command write cycle
t
nxtc
20
µ
s
&(
hold time
t
ceh
0
ns
&(
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
:(
rise time
t
r
30
ns
:(
fall time
t
f
30
ns
CE
A18 to A0
IO7 to IO0
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 at the same time.
t
ces
ADDRESS STABLE
DATA
t
f
t
r
Figure 7.17 Timing Waveforms when Entering Another Mode from Memory Read Mode