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Datasheet: PDF
Features:
- Drop-In Replacement for IBM AT Computer Clock/Calendar
- RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099
- Binary or BCD Time Representation
- 12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode
- Daylight Saving Time Option
- Selectable Intel or Motorola Bus Timing
- Interfaced with Software as 128 RAM Locations
- 14 Bytes of Clock and Control Registers
- 114 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 Flags
- Time-of-Day Alarm Once Per Second to Once Per Day
- Periodic Rates from 122µs to 500ms
- End-of-Clock Update Cycle Flag
- Programmable Square-Wave Output
- Automatic Power-Fail Detect and Switch Circuitry
- Optional 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/Uses:
- Embedded Systems
- Network Hubs, Bridges, and Routers
- Security Systems
- Utility Meters
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