Samsung S5PC110 Manual page 739

4.1 Overview of Real Time Clock................................................................................................................... 4-1
4.2 Key Features of Real Time Clock ............................................................................................................ 4-1
4.2.1 Real Time Clock Operation Description ........................................................................................... 4-2
4.3 Leap Year Generator ............................................................................................................................... 4-3
4.4 Read / Write Register............................................................................................................................... 4-4
4.4.1 Backup Battery Operation ................................................................................................................ 4-4
4.5 Alarm Function ......................................................................................................................................... 4-4
4.6 Tick Time Interrupt ................................................................................................................................... 4-5
4.7 32.768khz X-Tal Connection Example .................................................................................................... 4-6
4.8 RTC Start ................................................................................................................................................. 4-6
4.9 I/O Description ......................................................................................................................................... 4-7
4.10 Register Description............................................................................................................................... 4-8
4.10.1 Register Map .................................................................................................................................. 4-8