WDSEL=B_0x0, MSK1=B_0x0, MSK3=B_0x0, PM=B_0x0, MSK2=B_0x0, MSK4=B_0x0
RTC alarm A register
| SU | Second units in BCD format. |
| ST | Second tens in BCD format. |
| MSK1 | Alarm A seconds mask 0 (B_0x0): Alarm A set if the seconds match 1 (B_0x1): Seconds dont care in alarm A comparison |
| MNU | Minute units in BCD format |
| MNT | Minute tens in BCD format |
| MSK2 | Alarm A minutes mask 0 (B_0x0): Alarm A set if the minutes match 1 (B_0x1): Minutes dont care in alarm A comparison |
| HU | Hour units in BCD format |
| HT | Hour tens in BCD format |
| PM | AM/PM notation 0 (B_0x0): AM or 24-hour format 1 (B_0x1): PM |
| MSK3 | Alarm A hours mask 0 (B_0x0): Alarm A set if the hours match 1 (B_0x1): Hours dont care in alarm A comparison |
| DU | Date units or day in BCD format |
| DT | Date tens in BCD format |
| WDSEL | Week day selection 0 (B_0x0): DU[3:0] represents the date units 1 (B_0x1): DU[3:0] represents the week day. DT[1:0] is dont care. |
| MSK4 | Alarm A date mask 0 (B_0x0): Alarm A set if the date/day match 1 (B_0x1): Date/day dont care in alarm A comparison |