256Mb: 3V Embedded Parallel NOR Flash
Program Operations
1. The ENHANCED BUFFERED PROGRAM ABORT AND RESET command must be issued to
return the device to read mode.
Notes:
2. When the block address is specified, all addresses in the selected block address space
must be issued starting from 00h. Furthermore, when loading the write buffer address
with data, data program addresses must be consecutive.
3. DQ7 must be checked since DQ5 and DQ7 may change simultaneously.
4. If this flowchart location is reached because DQ5 = 1, then the ENHANCED WRITE TO
BUFFER PROGRAM command failed. If this flowchart location is reached because DQ1 =
1, then the ENHANCED WRITE TO BUFFER PROGRAM command aborted. In both cases,
the appropriate RESET command must be issued to return the device to read mode: A
RESET command if the operation failed; an ENHANCED WRITE TO BUFFER PROGRAM
ABORT AND RESET command if the operation aborted.
ENHANCED BUFFERED PROGRAM ABORT AND RESET Command
An ENHANCED BUFFERED PROGRAM ABORT AND RESET command must be issued
to reset the device to read mode when the ENHANCED BUFFERED PROGRAM opera-
tion is aborted. The buffer programming sequence can be aborted in the following
ways:
• Write to an address in a different block than the one specified during the buffer load.
• Write an address/data pair to a different write buffer page than the one selected by
the starting address during the program buffer data loading stage of the operation.
• Write data other than the CONFIRM command after the 256 data load cycles.
• Load a value that is greater than or less than the 256 buffer size.
• Load address/data pairs in an incorrect sequence.
The abort condition is indicated by DQ1 = 1, DQ6 = toggle, and DQ5 = 0 (all of which are
status register bits).
PDF: 09005aef84bd3b68
m29w_256mb.pdf - Rev. B 5/13 EN
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