S3C24A0A Datasheet, PDF (8/519 Pages) Samsung semiconductor – 32-BIT RISC MICROPROCESSOR

Table of Contents (Continued)
Chapter 10 RTC (Real Time Clock)
Overview ....................................................................................................................................................... 10-1
Feature................................................................................................................................................. 10-1
Real Time Clock Operation.................................................................................................................. 10-2
Leap Year Generator ........................................................................................................................... 10-2
Read/Write Registers........................................................................................................................... 10-2
Backup Battery Operation.................................................................................................................... 10-2
ALARM Function .................................................................................................................................. 10-3
TICK Time Interrupt ............................................................................................................................. 10-3
Round Reset Function ......................................................................................................................... 10-3
32.768kHz X-Tal Connection Example............................................................................................... 10-3
Real Time Clock Special Registers .............................................................................................................. 10-4
Real Time Clock Control Register (RTCCON) .................................................................................... 10-4
TICK Time Count Register (TICNT)..................................................................................................... 10-4
RTC ALARM Control Register (RTCALM)........................................................................................... 10-5
ALARM Second Data Register (ALMSEC) .......................................................................................... 10-6
ALARM Min Data Register (ALMMIN) ................................................................................................. 10-6
ALARM Hour Data Register (ALMHOUR) ........................................................................................... 10-6
ALARM Date Data Register (ALMDATE) ............................................................................................ 10-7
ALARM Mon Data Register (ALMMON) .............................................................................................. 10-7
ALARM Year Data Register (ALMYEAR) ............................................................................................ 10-7
BCD Second Register (BCDSEC) ....................................................................................................... 10-8
BCD Minute Register (BCDMIN) ......................................................................................................... 10-8
BCD Hour Register (BCDHOUR) ........................................................................................................ 10-9
BCD Date Register (BCDDATE).......................................................................................................... 10-9
BCD Day Register (BCDDAY) ............................................................................................................. 10-9
BCD Month Register (BCDMON) ........................................................................................................ 10-10
BCD Year Register (BCDYEAR) ......................................................................................................... 10-10
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S3C24A0A MICROPROCESSOR