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CHAPTER 28 3M-BIT FLASH MEMORY
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Sector erase suspend
Read-access during a sector erase suspend causes the flash memory to output 1 if the address specified by
the address signal belongs to the sector being erased. The flash memory outputs bit7 (DATA: 7) of the read
value at the address specified by the address signal if the address specified by the address signal does not
belong to the sector being erased. Referencing this flag together with the toggle bit flag (DQ6) enables a
decision to be made on whether the flash memory is in the erase suspended state and which sector is being
erased.
Note:
When the automatic algorithm is being started, read-access to the specified address is ignored.
Since termination of the data polling flag (DQ7) can be accepted for a data read and other bits
output, data read after the automatic algorithm has terminated should be performed after read-
access has confirmed that data polling has terminated.
568
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