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DS1556 Features- Integrated NV SRAM, Real-Time Clock (RTC), Crystal, Power-Fail Control Circuit, and Lithium Energy Source
- Clock Registers are Accessed Identically to the Static RAM; These Registers Reside in the 16 Top RAM Locations
- Century Byte Register (i.e., Y2K Compliant)
- Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
- Precision Power-On Reset
- Programmable Watchdog Timer and RTC Alarm
- BCD-Coded Year, Month, Date, Day, Hours, Minutes, and seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100
- Battery Voltage-Level Indicator Flag
- Power-Fail Write Protection Allows for ±10% VCCPower-Supply Tolerance
- Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
- Also Available in Industrial Temperature Range: -40°C to +85°C
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