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Part Number
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UPD4991A |
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Manufacturer
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NEC |
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Description
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4-BIT PARALLEL I/O CALENDAR CLOCK |
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Published
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Apr 17, 2005 |
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Datasheet
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UPD4991A
|
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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