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M41T62 Datasheet Low-power serial real-time clocks

Manufacturer: STMicroelectronics

General Description

1 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.

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Overview

M41T62, M41T64, M41T65 Datasheet Low-power serial real-time clocks (RTCs) with alarm 3mm 3mm QFN16 3 x 3 mm 1.5 mm 3.2 mm Embedded crystal LCC8 1.5 x 3.

Key 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.