The Configuration and Control Register permanently enables stack alignment and causes unaligned accesses to result in a Hard Fault.
| UNALIGN_TRP | Always reads as one, indicates that all unaligned accesses generate a HardFault. |
| STKALIGN | Always reads as one, indicates 8-byte stack alignment on exception entry. On exception entry, the processor uses bit[9] of the stacked PSR to indicate the stack alignment. On return from the exception it uses this stacked bit to restore the correct stack alignment. |