DS1344 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.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Datasheet Details

Part number	DS1344
Manufacturer	Maxim Integrated (now Analog Devices)
File Size	1.26 MB
Description	(DS1343 / DS1344) Low-Current SPI/3-Wire RTCs
Datasheet	DS1344 DS1343 Datasheet (PDF)

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)

Part Number	Description
DS1340	I2C RTC
DS1341	(DS1341 / DS1342) Low-Current I2C RTCs
DS1342	(DS1341 / DS1342) Low-Current I2C RTCs
DS1343	(DS1343 / DS1344) Low-Current SPI/3-Wire RTCs
DS1345AB	1024k Nonvolatile SRAM
DS1345Y	1024k Nonvolatile SRAM
DS1371	32-Bit Binary Counter Watchdog Clock
DS1372	Binary Counter Clock
DS1374	32-Bit Binary Counter Watchdog RTC
DS1375	I2C Digital Input RTC