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S3F8275X
Flash Memory User Programming Enable Register
The FMUSR register is used for a safety operation of the flash memory. This register will protect undesired erase
or program operation from malfunctioning of CPU caused by an electrical noise. After reset, the user-programming
mode is disabled, because the value of FMUSR is "00000000B" by reset operation. If necessary to operate the
flash memory, you can use the user programming mode by setting the value of FMUSR to "10100101B". The
other value of "10100101b", user program mode is disabled.
Figure 16-2. Flash Memory User Programming Enable Register (FMUSR)
Flash Memory User Programming Enable Register (FMUSR)
F1H, Set 1, Bank 1, R/W
MSB
.7
.6
.5
Flash memory user programming enable bits:
10100101: Enable user programming mode
Other values: Disable user programming mode
EMBEDDED FLASH MEMORY INTERFACE
.4
.3
.2
.1
.0
LSB
16-3
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