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[bit2] Reserved
This is a reserved bit. Always set this bit to "0."
[bit1] WE (Write Enable)
This bit controls the writing of data and commands to flash memory in CPU mode.
When this bit is set to "0," writing data and commands to flash memory is disabled.
Moreover, data is read from flash memory in 32-bit access mode.
When this bit is set to "1," data and commands can be written to flash memory and the
automatic algorithm can be started. However, data is read from flash memory in 16-bit access
mode.
If this bit is overwritten, confirm that the RDY bit has stopped the automatic algorithm (write/
erase). When the RDY bit is set to "0," the value of this bit cannot be changed.
Notes:
• If this is overwritten, confirm that the RDY bit has stopped the automatic algorithm. When the RDY
bit is set to "0", the value of this bit cannot be charged.
• When WE=1, do not respond to the instruction access request and only respond to the data
access request.
Writing is enabled regardless of this bit in flash memory mode.
0
1
•
This bit is initialized to "0" during reset.
•
Read and write operations are enabled.
[bit0] Reserved
This is a reserved bit. Always set this bit to "0."
Writing to flash memory is disabled and data is read from
flash memory in 32-bit access mode.
Writing to flash memory is enabled and data is read from
flash memory in 16-bit access mode.
CHAPTER 19 FLASH MEMORY
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