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FWE
t
ens
ADDRESS
t
CE
ces
OE
WE
t
f
FO7
FO6
FO5 to FO0
7.8.7
Status Read Mode
(1) Status read mode is used to identify what type of abnormal end has occurred. Use this mode
when an abnormal end occurs in auto-program mode or auto-erase mode.
(2) The return code is retained until a command write for other than status read mode is
performed.
Table 7.17 AC Characteristics in Status Read Mode
= 5.0 V ±10%, V
(Conditions: V
CC
Item
Command write cycle
&(
hold time
&(
setup time
Data hold time
Data setup time
Write pulse width
2(
output delay time
Disable delay time
&(
output delay time
:(
rise time
:(
fall time
t
ceh
t
nxtc
t
wep
t
r
t
ds
t
dh
CL
in
H'20
Figure 7.21 Auto-Erase Mode Timing Waveforms
= 0 V, Ta = 25°C ±5°C)
SS
Symbol
t
nxtc
t
ceh
t
ces
t
dh
t
ds
t
wep
t
oe
t
df
t
ce
t
r
t
f
t
spa
t
ests
t
(100 to 40000ms)
erase
Erase end
identification signal
Erase normal end
identification signal
DL
in
H'20
Min
20
0
0
50
50
70
Rev. 2.0, 11/00, page 163 of 1037
t
enh
t
nxtc
FO0 to 5 = 0
Max
Unit
µs
ns
ns
ns
ns
ns
150
ns
100
ns
150
ns
30
ns
30
ns
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