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Section 18 ROM
FWE
A16-0
t
t
ens
ces
CE
OE
tf
WE
I/O7
I/O6
I/O5-0
Caution on Use of Erase-Program Mode
• Auto-erase mode supports only entire memory erasing.
• Do not perform a command write during auto-erasing.
• Confirm normal end of auto-erasing by checking I/O 6. Alternatively, status read mode can
also be used for this purpose.
Rev. 4.00 Jan 26, 2006 page 654 of 938
REJ09B0276-0400
t
t
nxtc
ceh
t
wep
tr
t
t
ds
dh
H'20
Figure 18.21 Auto-Erase Mode Timing Waveforms
t
t
ests
spa
t
erase
Erase end
identification signal
Erase normal and
confirmation signal
H'00
H'20
t
pnh
t
nxtc
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