DS1742 FEATURES
Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit and Lithium Energy Source
1 of 16 REV: 102808
Clock Registers are Accessed Identically to the Static RAM; These Registers are Resident in the Eight Top RAM Locations
Century Byte Register
Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
BCD Coded Century, 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% VCC Power Supply Tolerance
Lithium Energy Source is Electrically Disconnected to Retain Freshness until Power is Applied for the First Time
Standard JEDEC Bytewide 2k x 8 Static RAM Pinout
Quartz Accuracy ±1 Minute a Month at +25°C, Factory Calibrated
Underwriters Laboratories (UL®) Recognized
