2.6.1 Wrong Reset Value of NVMCTRL.CTRLA Register
In some cases, the NVMCTRL.CTRLA reset value will not be ‘0x00’.
Even reserved bits can be read as ‘1’ after Reset.
Work Around
Ignore the initial value.
Affected Silicon Revisions
| Rev. A | Rev. B | Rev. C |
| X | X | X |