DS1543 Datasheet - Dallas Semiconducotr

DS1543, 64k NV Timekeeping RAM

www.dalsemi.com .
A0-A12 - Address Input DQ0-DQ7 - Data Input/Outputs IRQ FT - Interrupt, Frequency Test Output (Open-Drain) RST - Power-On Reset Output (Open-Dra.

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DS1543-DallasSemiconducotr.pdf

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Datasheet Details

Part number:

DS1543

Manufacturer:

Dallas Semiconducotr

File Size:

196.72 KB

Description:

64k NV Timekeeping RAM

Features

* Integrated NV SRAM, real time clock, crystal, power-fail control circuit and lithium energy source Clock registers are accessed identical to the static RAM. These registers are resident in the sixteen top RAM locations Totally nonvolatile with over 10 years of operation in the absence of power Preci

Applications

* the life expectancy of the DS1543 will be approximately equal to the shelf life (expected useful life of the internal lithium battery with no load attached) of the battery which may prove to be as long as 20 years. INTERNAL BATTERY MONITOR The DS15433 constantly monitors the battery voltage of the

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DS1543 64k Timekeeping RAM Dallas Semiconducotr

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