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| Home > Programmer’s Reference > Status and system control registers > Flash Control Register, SYS_FLASH | |||
The SYS_FLASH register at 0x1000004C controls
write protection of static memory devices.
Figure 4.10 shows the register bit assignment.
The function of the register bits are listed in Table 4.13.
Table 4.13. SYS_FLASH register bit assignments
| Bits | Access | Name | Reset | Description |
|---|---|---|---|---|
| [31:4] | Write ignored, read as zero | − | 0x0000000 | Undefined |
| [3:1] | Write ignored, read as zero | − | b000 | Undefined |
| [0] | Read/Write | FLASHWPn | b0 | Controls writing to Flash (power-on reset state
is b0)
b0 = writing to Flash is disabled
b1 = writing to Flash is enabled |