Fujitsu F2MC-16LX Hardware Manual page 495

I Sector erase suspend
Read operations of the flash memory while sector erase is suspended will return "1" if an
address for the sector being erased has been specified, or will return the read value of bit 7
(DATA: 7) for the specified data item will be output in other cases. Which sector is being erased,
and whether that sector is in sector suspend state, can be identified by referring to the toggle bit
flag (DQ6).
Note:
If the automatic algorithm starts, read accesses to the specified address are not effective. In
data read operations, the other bits can be output provided the end of data polling flag (DQ7)
is set. Thus, read data after the end of the automatic algorithm only after the read access
that confirms the end of data polling.
CHAPTER 26 2M BIT FLASH MEMORY
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