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DS1343 - (DS1343 / DS1344) Low-Current SPI/3-Wire RTCs

DS1343 Description

19-5801; Rev 0; 3/11 Low-Current SPI/3-Wire RTCs General .
The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life fr.

DS1343 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 T

DS1343 Applications

* Medical Handheld Devices www. DataSheet4U. net Typical Operating Circuit VCC Telematics Embedded Timestamping RPU VCC INT0 PF INT1 CE SCLK SDI SDO X1 DS1343 DS1344 INT RST μP 3-WIRE PORT X2 VBAT Ordering Information appears at end of data sheet. SERMODE GND NOTE: SHOWN IN 3-WIRE I/O CONFIGURAT

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DS1343 DS1344 Low-Current SPI 3-Wire RTCs Maxim Integrated Products
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