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

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

DS12885S+ - Datasheet