Erasing All Data From Flash Memory (Chip Erase) - Fujitsu F2MC-8FX Hardware Manual

CHAPTER 28 256-KBIT FLASH MEMORY
28.6.3

Erasing All Data from Flash Memory (Chip Erase)

This section describes the procedure for issuing the chip erase command to erase all
data from flash memory.
Erasing Data from Flash Memory (Chip Erase)
• To erase all data from flash memory, send the chip erase command in the command sequence table
continuously from the CPU to flash memory.
• The chip erase command is executed in six bus operations. Chip erasing is started upon completion of
the sixth programming cycle.
• Before chip erasing, the user need not perform programming into flash memory. During execution of the
automatic erase algorithm, flash memory automatically programs "0" before erasing all cells
automatically.
Notes on Chip Erasing
If a hardware reset occurs during erasure, the data being erased from flash memory is not guaranteed.
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