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CHAPTER 33 FLASH MEMORY
33.7.3
Erasing All Data (Erasing Chips)
This section describes the procedure for issuing the Chip Erase command to erase all
data in the flash memory.
■ Erasing all data in the flash memory (erasing chips)
All data can be erased from the flash memory by sending the Chip Erase command in the command
sequence table (see Table 33.5-1 Command sequence table in Section 33.5 Starting the Flash Memory
Automatic Algorithm) continuously to the target sector in the flash memory.
The Chip Erase command is executed in six bus operations. When writing of the sixth cycle is completed,
the chip erase operation is started. For chip erase, the user does not need to write 0 to the flash memory
before erasing. During execution of the automatic erase algorithm, the flash memory automatically writes 0
for verification before all of the cells are erased .
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