24.22.2.12 NVMLBWP – Flash Boot Write Protect Register
| Name: | NVMLBWP |
| Offset: | 0xF0 |
| Reset: | 0x80FFFFFF |
| Property: | - |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| ULOCK | |||||||||
| Access | R/C | ||||||||
| Reset | 1 |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| LBWP[23:16] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| LBWP[15:8] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| LBWP[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
Bit 31 – ULOCK Lower Boot Write Protect (LBWPn) Unlock bit
Note:
- This field can only be modified when the NVMKEY unlock sequence is satisfied.
- This field can be cleared at the same time as writing to LBWP[msb:lsb].
| Value | Description |
|---|---|
| 1 |
LBWPn bits are not locked and can be modified |
| 0 |
LBWPn bits are locked and cannot be modified |
Bits 23:0 – LBWP[23:0] Boot Pages Write Protect bits
Note:
- This field can only
be modified when the NVMKEY unlock sequence is satisfied and ULOCK =
1. - The OTP page is always erase-protected and its associated LBWP bit is only for write-protection.
| Value | Description |
|---|---|
| 1 |
Erase and write-protection for upper boot page n is enabled |
| 0 |
Erase and write-protection for upper boot page n is disabled |