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DS1318 - Parallel-Interface Elapsed Time Counter

DS1318 Description

19-5664; Rev 1; 12/10 Parallel-Interface Elapsed Time Counter DS1318 General .
The DS1318 parallel-interface elapsed time counter (ETC) is a 44-bit counter that maintains the amount of time that the device operates from main and/.

DS1318 Features

* Byte-Wide Parallel Interface
* 44-Bit Binary Counter Provides Timer with 244µs Resolution
* Automatic Power-Fail Detect and Switch Circuitry Selects Power Source from the Primary Power and the Battery, and Write Protects the Internal Registers
* Internal Power-Fail

DS1318 Applications

* Typical Operating Circuit VCC RPU VCC SQW IRQ WE EXT OE CPU CE DS1318 VBAT A3
* A0 X1 DQ

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Parallel-Interface Elapsed Time Counter Maxim Integrated
Maxim Integrated DS1318-like datasheet