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7.8.6
Auto-Erase Mode
(a) Auto-erase mode supports only entire memory erasing.
(b) Do not perform a command write during auto-erasing.
(c) Confirm normal end of auto-erasing by checking FO6. Alternatively, status read mode can
also be used for this purpose (FO7 status polling uses the auto-erase operation end
identification pin).
(d) The status polling FO6 and FO7 pin information is retained until the next command write.
Until the next command write is performed, reading is possible by enabling
Table 7.16 AC Characteristics in Auto-Erase 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
Status polling start time
Status polling access time
Memory erase time
:(
rise time
:(
fall time
Erase setup time
Erase end setup time
Rev. 2.0, 11/00, page 162 of 1037
= 0 V, Ta = 25°C ±5°C)
SS
Symbol
Min
t
20
nxtc
t
0
ceh
t
0
ces
t
50
dh
t
50
ds
t
70
wep
t
1
ests
t
spa
t
100
erase
t
r
t
f
t
100
ens
t
100
enh
and
Max
Unit
µs
ns
ns
ns
ns
ns
ms
150
ns
40000
ms
30
ns
30
ns
ns
ns
.
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