Fujitsu FR81S User Manual
CHAPTER 28: REAL-TIME CLOCK(RTC)
2. Features
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: REAL-TIME CLOCK(RTC)
FUJITSU SEMICONDUCTOR CONFIDENTIAL
4
2. Features
This section explains features of the real-time clock (RTC).
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Function : Counts the number of days and time (day/ hour/ minute/ second) (operations are kept on in the
wacth mode too. )
The default values of the number of days and time can be modified.
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Operation clock : RTC clock (See "CHAPTER: CLOCK" for the selection of the clock source of the RTC
clock. See "CHAPTER: RTC/WDT1 CALIBRATION" for the correction when a
sub-clock(only dual clock product) is selected as a source.)
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Interrupt : Interrupts can be generated based on five intervals: 0.5second, 1second, 1minute, 1hour, and
1day. In addition, interrupts at any interval (from short interval to long interval) can be
generated by changing the sub-second value.
MB91520 Series
MN705-00010-1v0-E
1043