BRIGHT
Microelectronics
Inc.
Preliminary BM29F400T/BM29F400B
Switching Waveforms, continued
CH
t
CE
OE
DF
OE
t
t
OEH
t
WE
CE
t
OH
t
DQ7
DQ7
DQ7=Valid Data
WHWH
1 or 2
t
Data
High
Z
DQ0-DQ7
Valid Data
DQ0-DQ6
DQ0-DQ6=Invalid
OE
t
5.0V
CC
V
GND
Figure 11. AC Waveforms for
Polling during Internal Algorithm Operations
Data
Note: DQ7 = Valid Data (The device has completed the internal program or erase operation.)
CE
OEH
t
OE
OES
t
WE
DQ6=
Stop Toggling
Data
(DQ0-DQ7)
DQ0-DQ7
Valid
DQ6=Toggle
DQ6=Toggle
Data
OE
t
5.0V
CC
V
GND
Figure 12 AC Waveforms for Toggle Bit during Internal Algorithm Operation
Note: DQ6 stops toggling (The device has completed the internal program or erase operation.)
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