A d v a n c e I n f o r m a t i o n
accepts additional sector erase commands. 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 6 shows the outputs for
DQ3.
Table 6. Write Operation Status
DQ7
DQ5
DQ2
Operation
(Note 2)
DQ6
(Note 1)
DQ3
N/A
1
(Note 2)
RY/BY#
Embedded Program Algorithm
Embedded Erase Algorithm
DQ7#
0
Toggle
Toggle
0
0
No toggle
Toggle
0
0
Standard
Mode
Reading within Erase
Suspended Sector
1
No toggle
0
N/A
Toggle
1
Erase
Suspend
Mode
Reading within 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 has exceeded the maximum timing
limits. See DQ5: Exceeded Timing Limits‚ on page 29 for more information.
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
details.
February 18, 2005 S29AL004D_00_A1
S29AL004D
31
SPANSION [ SPANSION ]
