DS1318 - Maxim Integrated

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

DS1318
Manufacturer

Maxim Integrated
ChipWorker Part#

CW128141524
Category

Real Time Clock IC
Package

TSSOP-24
Description

Parallel Interface Elapsed Time Counter 24Pin TSSOP
Documentation

Datasheet

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DS1318 Specifications

Attribute	Attribute Value

Part Number	DS1318
Manufacturer	Maxim Integrated
ChipWorker Part#	CW128141524
Category	Real Time Clock IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	TSSOP-24
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	3V ~ 3.6V
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Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

General Description
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/or backup power or during an external event. The internal frequency of the counter clock is 4.096kHz, which provides a 244µs resolution and a maximum count of over 136 years. A built-in power-sense circuit detects power failures, automatically switches to the backup supply, and controls the timer. If an external event timer is desired, the control input EXT can control the counter operation. An open-drain output provides an interrupt, and a square-wave output provides a programmable square wave. The DS1318 is accessed through a byte wide parallel interface, and operates over the industrial temperature range.
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 Circuit Allows Timer to Provide Primary or Battery Operation Times
♦ Timer can Alternately Provide an Event Timer of Either an Active-High or Active-Low Pulse
♦ Interrupt Output Generated Periodically or When the Upper 32 Bits of the Counter Match an Alarm Register
♦ Square-Wave Output with 16 Selectable Frequencies from 32.768kHz to 0.5Hz
♦ +3.3V Operation
♦ Industrial Temperature Range: -40°C to +85°C
♦ Underwriters Laboratories (UL) Recognized
Applications
Power Meters
Industrial Controls
Servers

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