device accepts additional sector erase com-
mands. To ensure the command is accepted,
the system software should check the status of
DQ3 prior to and following each subsequent
sector erase command. If DQ3 is high on the
second status check, the last command might
not have been accepted.
Table 15, on page 33 shows the status of DQ3
relative to the other status bits.
Table 15. Write Operation Status
DQ7
(Note
2)
DQ7#
0
DQ5
DQ2
Status
DQ6
Toggle
Toggle
(Note 1) DQ3 (Note 2) RY/BY#
0
0
N/A
1
No toggle
Toggle
0
0
Embedded Program Algorithm
Embedded Erase Algorithm
Erase
Erase-Suspend-R
ead
Standard
Mode
1
No toggle
0
N/A
Toggle
1
Suspended Sector
Erase
Suspend
Mode
Non-Erase
Suspended Sector
Data
Data
Data
0
Data
N/A
Data
N/A
1
0
Erase-Suspend-Program
DQ7#
Toggle
Notes:
1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation exceeds the maximum
timing limits. Refer to the section on DQ5 for more information.
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection
for further details.
November 15, 2004
Am29LV320D
33
SPANSION [ SPANSION ]
