MB95630H Series
MN702-00009-2v0-E FUJITSU SEMICONDUCTOR LIMITED 567
CHAPTER 26 DUAL OPERATION FLASH MEMORY
26.8 Registers
[bit2] IRQEN: Flash memory program/erase interrupt enable bit
This bit enables or disables the generation of interrupt requests triggered by the completion of Flash memory
programming/erasing.
[bit1] WRE: Flash memory program/erase enable bit
This bit enables or disables the programming/erasing of data into/from the Flash memory area.
Set the WRE bit before invoking a Flash memory program/erase command.
Writing "0" to this bit disables generating program/erase signals even when a program/erase command is
input.
Writing "1" to this bit enables programming/erasing Flash memory data after a program/erase command is
input.
When not programming data into or erasing data from the Flash memory, set the WRE bit to "0" in order to
prevent data from being accidentally written into or erased from the Flash memory.
To program data to the Flash memory, set FSR:WRE to "1" to enable programming data to the Flash
memory, and set the flash memory sector write control register 0 (SWRE0) according to the Flash memory
sector into which data is to be written. When Flash memory programming is disabled (FSR:WRE = 0), no
write access to a sector in the Flash memory can be executed even though it has been enabled by setting a bit
corresponding to that sector in the Flash memory sector write control register 0 (SWRE0) to "1".
[bit0] SSEN: Sector swap enable bit
This bit is used to swap part of SA2 in the upper bank, at which interrupt vectors are kept, for SA1 in the
lower bank.
bit2 Details
Writing "0" Disables generating an interrupt upon completion of Flash memory programming/erasing.
Writing "1" Enables generating an interrupt upon completion of Flash memory programming/erasing.
bit1 Details
Writing "0" Disables Flash memory area programming/erasing.
Writing "1" Enables Flash memory area programming/erasing.
bit0 Details
Writing "0" Maps SA1 to 0x1800-0x1FFF, and the 2 Kbyte address area of SA2 to 0xF800-0xFFFF.
Writing "1" Maps the 2 Kbyte address area of SA2 to 0x1800-0x1FFF, and SA1 to 0xF800-0xFFFF.
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