Features

· 2.0 to 5.5 V clock operating voltage

· Counters for seconds, minutes, hours, day,

date, month, year, and century

· Software clock calibration

· Automatic switchover and deselect circuitry

(fixed reference)

· VCC = 2.7 to 5.5 V

2.5 V £ VPFD £ 2.7 V

· Serial interface supports I²C bus (400 kHz

protocol)

· Low operating current of 300 mA

· Oscillator stop detection

· Battery or SuperCapTM backup

· Operating temperature of - 40 to 85 °C

· Ultra-low battery supply current of 0.6 mA