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DS1340Z-3T&R

Real Time Clock I C RTC with Trickle Charger

Product Category: Real Time Clocks
Mfr. Part #
DS1340Z-3+T&R
Manufacturer: Analog Devices Inc.
Package: Reel
Lead Free Status /RoHS Status:
Data Sheet: DS1340Z-3+T&R Datasheet
Inventory: In Stock

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Mfr. Part #: DS1340Z-3+T&R

Specifications
Product Details

Specifications

Manufacturer Analog Devices Inc.

Mounting Style SMD/SMT

Package / Case SOIC-8

RTC Bus Interface Serial

Time Format HH:MM:SS

Battery Backup Switching Backup Switching

Supply Voltage - Max 3.3 V

Supply Voltage - Min 2.7 V

Minimum Operating Temperature - 40 C

Maximum Operating Temperature + 85 C

Packaging Reel

Function Calendar, Clock, Trickle Charger

Series DS1340Z

Brand Analog Devices / Maxim Integrated

Product Type Real Time Clocks

Standard Pack Qty 2500

Subcategory Clock & Timer ICs

Product Details

General Description

The DS1340 is a real-time clock (RTC)/calendar that is pin compatible and functionally equivalent to the ST M41T00, including the software clock calibration. The device additionally provides trickle-charge capability on the VBACKUP pin, a lower timekeeping voltage, and an oscillator STOP flag. Block access of the register map is identical to the ST device. Two additional registers, which are accessed individually, are required for the trickle charger and flag. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. A built-in power-sense circuit detects power failures and automatically switches to the backup supply. The device is programmed serially through an I2CTM bidirectional bus.

Features

â™¦ Enhanced Second Source for the ST M41T00
â™¦ Available in a Surface-Mount Package with an
Integrated Crystal (DS1340C)
â™¦ Fast (400kHz) I2C Interface
â™¦ Software Clock Calibration
â™¦ RTC Counts Seconds, Minutes, Hours, Day, Date,
Month, and Year
â™¦ Automatic Power-Fail Detect and Switch Circuitry
â™¦ Trickle-Charge Capability
â™¦ Low Timekeeping Voltage Down to 1.3V
â™¦ Three Operating Voltage Ranges (1.8V, 3V, and 3.3V)
â™¦ Oscillator Stop Flag
â™¦ Available in 8-Pin ÂµSOP or SO Packages
â™¦ Underwriters Laboratory (UL) Recognized

Applications

Portable Instruments
Point-of-Sale Equipment
Medical Equipment
Telecommunications

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Mfr. Part #: DS1340Z-3+T&R