DS1501/DS1511 Y2K-Compliant Watchdog Real-Time Clocks www.
maxim-ic.
com GENERAL DESCRIPTION The DS1501/DS1511 are full-function, year 2000compliant real-time clock/calendars (RTCs) with an RTC alarm, watchdog timer, power-on reset, battery monitors, 256 bytes NV SRAM, and a 32.
768kHz output.
User access to all registers within the DS1501/DS1511 is accomplished with a byte-wide interface, as shown in Figure 8.
The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour binary-coded decimal (BCD) format.
Corrections for day of month and leap year are made automatically.
FEATURES § BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds...

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