M41T83RMY6F

Real Time Clock Overview

The M41T83RMY6F is a low-power serial I2C real-time clock (RTC) manufactured by STMicroelectronics. It features an embedded crystal within an 18-SOX package, eliminating the need for external components. The device operates with a supply voltage range of 2.7 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. Key electrical parameters include a maximum clock frequency of 400 kHz for the I2C interface and a typical battery backup current of 365 nA. It provides automatic switchover between main power and battery supply.

Real Time Clock Feature Summary

• Integrated 18-SOX package with embedded 32.768 kHz crystal
• I2C bus interface supporting up to 400 kHz protocol
• Ultra-low battery supply current of 365 nA
• Automatic power fail detection and switchover circuitry

Real Time Clock Applications

• Smart grid distribution systems
• Smart metering applications
• Industrial data logging equipment

Real Time Clock Procurement Notes

Verify the specific suffix 'R' confirms the 2.7 V minimum operating voltage requirement for the target design. Confirm the 18-SOX package variant with embedded crystal matches the PCB layout constraints. Check RoHS compliance status and moisture sensitivity level requirements during assembly planning.

Real Time Clock Selection Notes

Select this component when an embedded crystal solution is required to save board space. Ensure the system voltage does not drop below 2.7 V during operation. Compare against M41T83ZMY6F if lower voltage operation down to 2.38 V is necessary. Verify I2C address compatibility with the host microcontroller.

Real Time Clock Part Context

This part belongs to the M41T83 family of serial RTCs. It shares functional similarities with M41T83SMY6F and M41T83ZMY6F, differing primarily in the minimum operating voltage specified by the middle letter suffix. All variants utilize the same 18-SOX package with embedded oscillator technology.

Real Time Clock Replacement Considerations

M41T83SMY6F offers a higher minimum voltage of 3.0 V. M41T83ZMY6F supports a lower minimum voltage of 2.38 V. These parts are pin-compatible but require verification of voltage rail stability before substitution.