VT82885 - ETC

VT82885 Real Time Clock

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-hou.

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 square wave output signal
• .