| BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100 Programmable Watchdog Timer and RTC Alarm Century Register; Y2K-Compliant RTC Automatic Battery Backup and Write Protection to External SRAM +5V Operation Precision Power-On Reset Power-Control Circuitry Supports System Power-On from Date/Day/Time Alarm or Key Closure 256 Bytes User NV RAM Auxiliary Battery Input Accuracy Better than ±1 Minute/Month at +25°C Day-of-Week/Date Alarm Register Battery Voltage-Level Indicator Flags Industrial Temperature Range: -40°C to +85°C |