RTC non-secure masked interrupt status register
| ALRAMF | Alarm A masked flag This flag is set by hardware when the alarm A non-secure interrupt occurs. |
| ALRBMF | Alarm B non-secure masked flag This flag is set by hardware when the alarm B non-secure interrupt occurs. |
| WUTMF | Wakeup timer non-secure masked flag This flag is set by hardware when the wakeup timer non-secure interrupt occurs. This flag must be cleared by software at least 1.5 RTCCLK periods before WUTF is set to 1 again. |
| TSMF | Timestamp non-secure masked flag This flag is set by hardware when a timestamp non-secure interrupt occurs. If ITSF flag is set, TSF must be cleared together with ITSF. |
| TSOVMF | Timestamp overflow non-secure masked flag This flag is set by hardware when a timestamp interrupt occurs while TSMF is already set. It is recommended to check and then clear TSOVF only after clearing the TSF bit. Otherwise, an overflow might not be noticed if a timestamp event occurs immediately before the TSF bit is cleared. |
| ITSMF | Internal timestamp non-secure masked flag This flag is set by hardware when a timestamp on the internal event occurs and timestamp non-secure interrupt is raised. |
| SSRUMF | SSR underflow non-secure masked flag This flag is set by hardware when the SSR underflow non-secure interrupt occurs. |