VT82885 VIA Technologies, Inc.
Real Time Clock electrical characteristics, bus timing and pin descriptions follows.
FEATURES • Drop-in replacement for IBM AT computer clock/calendar.
• Pin configuration closely matches the DS12887, DS12885and DS12885Q • Counts seconds, minutes, hours, days, day of the week, date, month, and year with leap year compensation • Binary or BCD representation of time, calendar and alarm • 12- or 24-hour clock with AM and PM in 12-hour mode • Daylight Savings Time option • Intel bus timing • Multiplex bus for pin efficiency • Interfaced with software as 128 RAM locations - 14 bytes of clock and control registers - 114 bytes of general purpose RAM • Programmable ...

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