Description
The M41T6x is a low-power serial real-time clock (RTC) with a built-in 32.768 kHz oscillator.
Eight registers are used for the clock/calendar function and are configured in binary-coded decimal (BCD) format.
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 second register.
- 350 nA timekeeping current at 3 V.
- Time keeping 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 I².