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DS1343 Datasheet (ds1343 / Ds1344) Low-current Spi/3-wire Rtcs

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-5801; Rev 0; 3/11 Low-Current SPI/3-Wire RTCs General.

General Description

The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life from a backup supply source.

The devices also support high-ESR crystals, broadening the pool of usable crystals for the devices.

The clock/calendar provides seconds, minutes, hours, day, date, month, and year information.

Key Features

  • S Low Timekeeping Current of 250nA (typ) S Compatible with Crystal ESR Up to 100kI S Versions Available to Support Either 6pF or 12.5pF Crystals S RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Through 2099 S Power-Fail and Switch Circuitry S Three Operating Voltages 1.8V ±5% 3.0V±10% 3.3V ±10% S Trickle-Charge Capability S Maintain Time Down to 1.15V (typ) S Support Motorola SPI Modes 1 and 3, or Standard 3-Wire Interface S Burst.

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More Datasheets from Maxim Integrated (now Analog Devices)

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