19-5501; Rev 9/10
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DS1557 4Meg, Nonvolatile, Y2K-Compliant
Timekeeping RAM
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 C...
