Control Register 12
| INTSSI | Every 0.5-second flag bit |
| INTSI | Every second flag bit |
| INTMI | Every minute flag bit |
| INTHI | Every hour flag bit |
| INTTMI | Timer underflow detection flag bit |
| INTALI | Alarm coincidence flag bit |
| INTERI | Time rewrite error interrupt flag bit |
| INTCRI | Year/month/date/hour/minute/second/day of the week counter value read completion interrupt flag bit |