OAD=0, PROTECT=0, KEY=others
Slave MPU Control Register
| OAD | Master Group enable 0 (0): Non-maskable interrupt. 1 (1): Internal reset. |
| PROTECT | Protection of register 0 (0): All Bus Slave register writing is possible. 1 (1): All Bus Slave register writing is protected. Read is possible. |
| KEY | Key Code This bit is used to enable or disable rewriting of the PROTECT and OAD bit. 0 (others): Writing to the PROTECT and OAD bit is invalid. 165 (0xA5): Writing to the PROTECT and OAD bit is valid, when the KEY bits are written 0xA5. |