A d v a n c e I n f o r m a t i o n
After an erase-suspended program operation is complete, the device returns to
the erase-suspend-read mode. The system can determine the status of the pro-
gram operation using the DQ7 or DQ6 status bits, just as in the standard word
program operation. Refer to Write Operation Status on page 56 for more
information.
In the erase-suspend-read mode, the system can also issue the autoselect com-
mand sequence. Refer to the Autoselect Mode on page 30 and Autoselect
Command Sequence on page 44 sections for details.
To resume the sector erase operation, the system must write the Erase Resume
command. Further writes of the Resume command are ignored. Another Erase
Suspend command can be written after the chip resumes erasing.
Note: During an erase operation, this flash device performs multiple internal operations which are in-
visible to the system. When an erase operation is suspended, any of the internal operations that were
not fully completed must be restarted. As such, if this flash device is continually issued suspend/resume
commands in rapid succession, erase progress is impeded as a function of the number of suspends. The
result is a longer cumulative erase time than without suspends. Note that the additional suspends do not
affect device reliability or future performance. In most systems rapid erase/suspend activity occurs only
briefly. In such cases, erase performance is not significantly impacted.
April 22, 2005 S29GL-A_00_A3
S29GL-A MirrorBit™ Flash Family
53
SPANSION [ SPANSION ]
