Product Summary
The DS12C887+ is a real-time clock (RTC). It provides a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square wave, and 113 bytes of batterybacked static RAM. It is suitable for embedded systems, utility meters, security systems, network hubs, bridges, and routers.
Parametrics
Absolute maximum ratings: (1)Voltage Range on VCC Pin Relative to Ground: -0.3V to +6.0V; (2)Operating Temperature Range: Commercial (noncondensing): 0℃ to +70℃; Industrial(noncondensing): -40℃ to +85℃; (3)Storage Temperature Range: EDIP: -40℃ to +85℃; PDIP, SO, PLCC, TQFP: -55℃ to +125℃; (4)Lead Temperature (soldering, 10s): +260℃; (5)Soldering Temperature (reflow): PDIP, SO, PLCC: +260℃; TQFP: +245℃.
Features
Features: (1)Drop-In Replacement for IBM AT Computer Clock/Calendar; (2)RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099; (3)Binary or BCD Time Representation; (4)12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode; (5)Daylight Saving Time Option; (6)Selectable Intel or Motorola Bus Timing; (7)Interfaced with Software as 128 RAM Locations; (8)Interrupt Output with Three Independently Maskable Interrupt Flags; (9)Time-of-Day Alarm Once Per Second to Once Per Day; (10)Periodic Rates from 122μs to 500ms; (11)End-of-Clock Update Cycle Flag; (12)Programmable Square-Wave Output; (13)Automatic Power-Fail Detect and Switch Circuitry; (14)Optional Industrial Temperature Range Available; (15)Underwriters Laboratory (UL) Recognized.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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DS12C887+ |
Maxim Integrated Products |
Real Time Clock RTC |
Data Sheet |
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