Low-power serial real-time clocks (RTCs) with alarm
Features
•Serial real-time clock (RTC) with alarm functions
−400 kHz I2C serial interface
−Memory mapped registers for seconds,
minutes, hours, day, date, month, year,
and century−Tenths/hundredths of seconds register
•350 nA timekeeping current at 3 V
•Timekeeping down to 1.0 V
•1.3 V to 4.4 V I2C bus operating voltage
−4.4 V max VCC suitable for lithium-ion battery operation
•Low operating current of 35 μA (at 400 kHz I2C speed)
Very small 3 x 3 mm, lead-free & halogen-free (ECOPACK2®)
16-lead QFN
