DS1553 - Year-2000-Compliant Timekeeping RAM
The DS1553 is a full-function, year-2000compliant (Y2KC) real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and 8k x 8 nonvolatile static RAM.
User access to all registers within the DS1553 is accomplished with a byte-wide interface as shown in Figure
DS1553 Features
* Integrated NV SRAM, RTC, Crystal, Power-Fail Control Circuit, and Lithium Energy Source
* Clock Registers are Accessed Identically to the Static RAM; These Registers are Resident in the 16 Top RAM Locations
* Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
