Features
■ Counters for seconds, minutes, hours, day,
date, month, years, and century
■ 32 KHz crystal oscillator integrating load
capacitance (12.5 pF) providing exceptional
oscillator stability and high crystal series
resistance operation
■ Oscillator stop detection monitors clock
operation
■ Serial interface supports I2C bus
(400 kHz protocol)
■ Low standby current 0.9 μA (typ at 3 V)
■ 2.0 to 5.5 V clock operating voltage
■ Special software programmable output
■ Operating temperature of –40 to 85 °C