MAX31329: Low current, real-time clock with I2C, power management, and integrated crystal

The MAX31329 low current, real-time clock (RTC) is a timekeeping device that provides timekeeping current in nanoamperes, thus extending battery life. The MAX31329 incorporates an integrated crystal oscillator, which eliminates the need for an external crystal.Other features include one digital Schmitt trigger input (DIN), time-of-day alarms, interrupt outputs, programmable square-wave output, and a serial bus timeout mechanism.

Key Features and Benefits

  • • Low timekeeping current of 240 nA and nanoampere standby power consumption extends system battery life
  • • Robust power management system allows clock to function even when the main power source is lost
  • • Integrated crystal oscillator improves timekeeping accuracy, simplifies PCB design, and reduces solution size

Applications

  • • Industrial Automation
  • • Instrumentation and Measurement
  • • Healthcare

Evaluation Board

The MAX31329 family can be evaluated with the MAX31329SHLD.

Block Diagrams and Tables

ADI MAX31329 Power Management and Integrated Crystal


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