Real Time Clock (Rtc) - Samsung S5PC110 Manual

S5PC110_UM
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REAL TIME CLOCK (RTC)

4.1 OVERVIEW OF REAL TIME CLOCK
The Real Time Clock (RTC) unit can operate using the backup battery while the system power is off. Although
power is off, backup battery can store the time by Second, Minute, Hour, Day of the week, Day, Month, and Year
data. The RTC unit works with an external 32.768 kHz crystal and performs the function of alarm.
4.2 KEY FEATURES OF REAL TIME CLOCK
• Supports BCD Number, that is Second, Minute, Hour, Day of the week, Day, Month, and Year.
• Supports Leap Year Generator
• Supports Alarm Function, that is ,Alarm-Interrupt or Wake-up from power down modes (idle, deep idle, stop,
deep stop, and sleep)
• Supports Tick Counter Function, that is Tick-Interrupt or Wake-up from power down modes (idle, deep idle,
stop, deep stop, and sleep)
• Supports Independent Power Pin (RTCVDD)
• Supports millisecond tick time interrupt for RTOS kernel time tick .
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