AP=RWPRIV, SH=NO
MPU Region Base Address Register
| XN | Execute Never |
| AP | Access permissions 0 (RWPRIV): Read/write by privileged code only 1 (RWANY): Read/write by any privilege level 2 (RPRIV): Read-only by privileged code only 3 (RANY): Read-only by any privilege level |
| SH | Shareability 0 (NO): Non-shareable 2 (OUTER): Outer shareable 3 (INNER): Inner shareable |
| BASE | Base address |