DS1343 Datasheet (Maxim Integrated Products) - (DS1343 / DS1344) Low-Current SPI/3-Wire RTCs

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

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 prov

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