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CHAPTER 19 512 KBIT FLASH MEMORY
G
At sector erasing suspension
• If a continuous read access is made in the state of the sector erasing suspension, flash
memory outputs 1 and 0 alternately when the read address is the sector being erased and bit
2 (DATA: 2) for the read value of the read address when the read address is not the sector
being erased.
• If programming is performed in the state of the sector erasing suspension, flash memory
outputs 1 when a continuous read access is started with the sector that is not in the state of
the sector erasing suspension.
• The toggle bit 2 flag (DQ2) is used together with the toggle bit flag (DQ6) to detect that sector
erasing is suspended (the DQ2 flag performs the toggle operation but the DQ6 flag does not).
• If a read access to the sector being erased is made, the toggle bit 2 flag (DQ2) performs the
toggle operation, so it can also be used to detect the sector being erased.
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