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UPD4991A

4-BIT PARALLEL I/O CALENDAR CLOCK

[NEC] SEMICONDUCTORSELECTIONGUIDE

UPD4991A

MOS INTEGRATED CIRCUIT

FEATURES: ?Time(hour,minute,andsecond)andcalendar(leapyear,year,month,day,anddate)counters ?Leapyearcanbeautomaticallyidentifiedorset ?12-and24-hourmodesselectable ?4-bitparallelinput/outputinBCDdataformat ?Alarmfunction(hour,minute,second,month,day,

UPD4991ACX

4-BIT PARALLEL I/O CALENDAR CLOCK

[NEC] SEMICONDUCTORSELECTIONGUIDE

UPD4991ACX

MOS INTEGRATED CIRCUIT

FEATURES: ?Time(hour,minute,andsecond)andcalendar(leapyear,year,month,day,anddate)counters ?Leapyearcanbeautomaticallyidentifiedorset ?12-and24-hourmodesselectable ?4-bitparallelinput/outputinBCDdataformat ?Alarmfunction(hour,minute,second,month,day,

UPD4991AGS

4-BIT PARALLEL I/O CALENDAR CLOCK

[NEC] SEMICONDUCTORSELECTIONGUIDE

UPD4991AGS

MOS INTEGRATED CIRCUIT

FEATURES: ?Time(hour,minute,andsecond)andcalendar(leapyear,year,month,day,anddate)counters ?Leapyearcanbeautomaticallyidentifiedorset ?12-and24-hourmodesselectable ?4-bitparallelinput/outputinBCDdataformat ?Alarmfunction(hour,minute,second,month,day,

UPD4991A

4-BIT PARALLEL I/O CALENDAR CLOCK;