Non-Secure Region Unlock Bits
Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
NSLKEY[7:0] | |||||||||
Access | W/W*/W | W/W*/W | W/W*/W | W/W*/W | W/W*/W | W/W*/W | W/W*/W | W/W*/W | |
Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
DNS | ANS | BNS | |||||||
Access | RW/RW*/RW | RW/RW*/RW | RW/RW*/RW | ||||||
Reset | x | x | x |
Non-Secure Unlock Key
When this bit group is written to the key value 0xA5, the write will be performed. If a value different from the key value is tried, the write will be discarded and INTFLAG.KEYE set.
BOOT Non-Secure Unlock Bit
Value | Description |
---|---|
0 | The Non-Secure Flash (BOOT region) is locked. |
1 | The Non-Secure Flash (BOOT region) is not locked. |
APPLICATION Non-Secure Unlock Bit
Value | Description |
---|---|
0 | The Non-Secure Flash (APPLICATION region) is locked. |
1 | The Non-Secure Flash (APPLICATION region) is not locked. |
Data Flash Non-Secure Unlock Bit
Value | Description |
---|---|
0 | The Non-Secure Data Flash region is locked. |
1 | The Non-Secure Data Flash region is not locked. |