DS12885S+ Functions, Maxim Integrated DS12885S+, Real Time Clock, 144B RAM Multiplexed, 24-Pin SOIC

Drop-In Replacement for IBM AT Computer Clock/CalendarRTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099Binary or BCD Time Representation12-Hour or 24-Hour Clock with AM and PM in 12-Hour ModeDaylight Saving Time OptionSelectable Intel or Motorola Bus TimingInterfaced with Software as 128 RAM Locations14 Bytes of Clock and Control Registers114 Bytes of General-Purpose, Battery-Backed RAM (113 Bytes in the DS12C887 and DS12C887A)RAM Clear Function (DS12885, DS12887A, and DS12C887A)Interrupt Output with Three Independently Maskable Interrupt FlagsTime-of-Day Alarm Once Per Second to Once Per DayPeriodic Rates from 122μs to 500msEnd-of-Clock Update Cycle FlagProgrammable Square-Wave OutputAutomatic Power-Fail Detect and Switch CircuitryOptional 28-Pin PLCC Surface Mount Package or 32-Pin TQFP (DS12885)Optional Encapsulated DIP (EDIP) Package with Integrated Crystal and Battery (DS12887, DS12887A, DS12C887, DS12C887A)Optional Industrial Temperature Range Available Applications/UsesEmbedded SystemsNetwork Hubs, Bridges, and RoutersSecurity SystemsUtility Meters