M41T82ZM6F

Real Time Clock Overview

The M41T82ZM6F is a low-power serial I²C real-time clock (RTC) manufactured by STMicroelectronics. It operates within an industrial temperature range of -40°C to +85°C and supports a supply voltage from 2.38 V to 5.5 V. The device features an ultra-low battery supply current of 365 nA and includes automatic switchover circuitry for battery backup. It utilizes an SO-8 package and provides clock/calendar functions via an I²C bus interface supporting the 400 kHz protocol.

Real Time Clock Feature Summary

• Ultra-low battery supply current of 365 nA
• Automatic power failure detection and battery switchover
• I²C bus interface supporting 400 kHz protocol
• Industrial operating temperature range (-40°C to +85°C)

Real Time Clock Applications

• Smart grid distribution and smart meters
• Industrial control systems requiring precise timekeeping
• Battery-powered electronic devices needing low standby current

Real Time Clock Procurement Notes

Verify the specific suffix 'Z' indicates compliance with RoHS standards and restricted substances requirements as per the manufacturer's Ecopack3 designation. Confirm that the SO-8 package variant matches the design footprint, as other variants in the M41T8x family may utilize different packages such as QFN or SOX18.

Real Time Clock Selection Notes

Select this component when an 8-pin SO-8 package is required for space-constrained designs. Ensure the system voltage remains above 2.38 V during operation. Consider alternative models like the M41T83 if embedded crystal functionality or additional alarms are needed, as the M41T82 relies on external crystals in the SO-8 configuration.

Real Time Clock Part Context

This part belongs to the M41T8x family of serial I²C real-time clocks. The M41T82ZM6F specifically denotes the version packaged in an 8-lead SOIC format. Other family members include the M41T83, which offers more features and different packaging options like QFN16 or SOX18 with embedded crystals.

Real Time Clock Replacement Considerations

Direct replacements within the same package include other M41T82 variants with different suffixes indicating minor manufacturing or compliance updates. For feature upgrades, the M41T83 series serves as a functional successor but requires package adaptation.