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UPD4991A

Part Number	UPD4991A
Manufacturer	NEC
Description	4-BIT PARALLEL I/O CALENDAR CLOCK
Features	• Time (hour, minute, and second) and calendar (leap year, year, month, day, and date) counters • Leap year can be auto...
Published	Apr 17, 2005
Datasheet	UPD4991A PDF File

Features

• Time (hour, minute, and second) and calendar (leap year, year, month, day, and date) counters
• Leap year can be automatically identified or set
• 12- and 24-hour modes selectable
• 4-bit parallel input/output in BCD data format
• Alarm function (...

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