17.4.1 Counter Bit Positions
The RTC counters support the following two counting modes:
- Binary Mode: In Binary mode, a 43-bit counter is provided.
- Calendar Mode: The 43 bits are allocated as following:
| Counter | Counts | Size Bits | Bits in Counter | Reset Value |
|---|---|---|---|---|
| Seconds | 0-59 | 6 | [5:0] | 0 |
| Minutes | 0-59 | 6 | [11:6] | 0 |
| Hours | 0-23 | 5 | [16:12] | 0 |
| Day | 1-31 | 5 | [21:17] | 1 |
| Month | 1-12 | 5 | [25:22] | 1 |
| Year | 0-255 | 8 | [33:26] | 0 |
| Weekday | 1-7 | 3 | [36:34] | 7 |
| Week | 1-52 | 6 | [42:37] | 1 |
- Weekday, 1: Sunday, 2: Monday …. 7:Saturday
- Reset date is Saturday 1 January 2000.
- The leap year calculations assume the year value where 0-255 is mapped to 2000 to 2255.