MAX31329ELB+

Real Time Clock Overview

The MAX31329ELB+ is a low-current real-time clock (RTC) featuring an integrated 32.768kHz crystal and power management capabilities. It operates within a voltage range of +1.6V to +5.5V, consuming typical timekeeping currents of 240nA at 3.0V. The device includes two time-of-day alarms, a countdown timer with pause functionality, and a digital Schmitt trigger input for event detection. It utilizes an I2C serial interface and provides 64 bytes of user RAM. The component supports automatic switchover to a backup battery or supercapacitor upon power failure.

Real Time Clock Feature Summary

• Integrated 32.768kHz crystal with ±5ppm typical accuracy
• Low current consumption: 240nA typical timekeeping current at 3.0V
• Power management with automatic switchover and trickle charger support
• Two interrupt pins and programmable square-wave output

Real Time Clock Applications

• Industrial Equipment
• Test and Measurement Equipment
• Energy Meters
• Medical Devices
• IoT Devices

Real Time Clock Procurement Notes

Verify the specific ELB+ suffix against the manufacturer's official documentation to confirm package type and RoHS compliance status. Ensure that the ordering information matches the exact part number required for the design, as suffixes may indicate variations in packaging or material composition.

Real Time Clock Selection Notes

Select this component when board space is limited due to the integrated crystal and load capacitors. It is suitable for applications requiring precise timing without external oscillator components. Consider the 1.6V to 5.5V operating range for compatibility with various system voltages. Verify that the I2C interface speed requirements align with the device's specifications.

Real Time Clock Part Context

The MAX31329 belongs to Maxim Integrated's family of low-power RTCs designed to extend battery life in portable and remote devices. It combines timekeeping functions with power management features, distinguishing it from standard RTCs by including a built-in trickle charger and automatic supply switching mechanism.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.