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S3C6400
RISC MICROPROCESSOR
33
This chapter describes the functions and usage of Real Time Clock (RTC) in SEC6400X RISC microprocessor.
OVERVIEW
The Real Time Clock (RTC) unit can be operated by the backup battery when the system power is off. 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 can perform the alarm function.
FEATURES
The Real Time Clock includes the following features:
•
BCD number: second, minute, hour, date, day, month, and year.
•
Leap year generator
•
Alarm function: alarm-interrupt or wake-up from power-off mode.
•
Tick counter function : tick-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.
REAL TIME CLOCK (RTC)
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
Real Time Clock
33-1
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