Maxim Integrated DS17287-5+, Real Time Clock, 114B RAM Multiplexed, 24-Pin EDIP

Incorporates Industry-Standard DS12887 PC Clock Plus Enhanced Functions RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099 Optional +3.0V or +5.0V Operation SMI Recovery Stack 64-Bit Silicon Serial Number Power-Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure Crystal Select Bit Allows Operation with 6pF or 12.5pF Crystal 12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode 114 Bytes of General-Purpose, Battery-Backed NV SRAM Extended Battery-Backed NV SRAM 2048 Bytes (DS17285/DS17287) 4096 Bytes (DS17485/DS17487) 8192 Bytes (DS17885/DS17887) RAM Clear Function Interrupt Output with Six Independently Maskable Interrupt Flags Time-of-Day Alarm Once per Second to Once per Day End of Clock Update Cycle Flag Programmable Square-Wave Output Automatic Power-Fail Detect and Switch Circuitry Available in PDIP, SO, or TSOP Package (DS17285, DS17485, DS17885) Optional Encapsulated DIP (EDIP) Package with Integrated Crystal and Battery (DS17287, DS17487, DS17887) Optional Industrial Temperature Range Available Applications Embedded Systems Network Hubs, Bridges, and Routers Security Systems Utility Meters