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S3C2410A REAL TIME CLOCK (RTC)
17-1
17 REAL TIME CLOCK (RTC)
OVERVIEW
The Real Time Clock (RTC) unit can be operated by the backup battery while the system power is off. The RTC can
transmit 8-bit data to CPU as Binary Coded Decimal (BCD) values using the STRB/LDRB ARM operation. The data
include the time by second, minute, hour, date, day, month, and year. The RTC unit works with an external 32.768
kHz crystal and also can perform the alarm function.
FEATURES
— BCD number: second, minute, hour, date, day, month, and year
— Leap year generator
— Alarm function: alarms interrupt or wake-up from power-off mode
— Year 2000 problem is removed.
— Independent power pin (RTCVDD)
— Supports millisecond tick time interrupt for RTOS kernel time tick.
— Round reset function