Product Details
Key Features
Applications/Uses
Interface | Multiplexed |
VSUPPLY (V) | 5 |
Date/ Time Format (hh = sec/100) | YY-MM-DD/ HH:MM:SS |
Memory Type | NV SRAM |
Memory Size (Bytes) | 114 |
Time of Day Alarms | 1 |
Integrated Resonator | XTAL |
Package/Pins | See Data Sheet |
Simplified Block Diagram
Technical Docs
Support & Training
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Sampling:
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Parameters
Interface | Multiplexed |
VSUPPLY (V) | 5 |
Date/ Time Format (hh = sec/100) | YY-MM-DD/ HH:MM:SS |
Memory Type | NV SRAM |
Memory Size (Bytes) | 114 |
Time of Day Alarms | 1 |
Integrated Resonator | XTAL |
Package/Pins | See Data Sheet |
Key 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
Description
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.