M41T83ZMY6F

Real Time Clock Overview

The M41T83ZMY6F is a low-power serial I2C real-time clock (RTC) manufactured by STMicroelectronics. It features an embedded 32.768 kHz crystal within its 18-SOX package, eliminating the need for external oscillator components. The device provides timekeeping in binary-coded decimal (BCD) format with automatic leap year correction and includes seven bytes of user SRAM. Key electrical parameters include a supply voltage range of 2V to 5.5V, a maximum clock frequency of 0.4 MHz, and a typical battery backup current of 365 nA. It supports interrupt capabilities and operates within a temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• Integrated 32.768 kHz crystal in 18-SOX package
• I2C interface with 0.4 MHz maximum clock frequency
• Automatic calendar corrections including leap years
• Ultra-low battery supply current of 365 nA

Real Time Clock Applications

• Smart metering systems
• Industrial control equipment
• Consumer electronics requiring precise timekeeping

Real Time Clock Procurement Notes

Verify the specific suffix 'ZMY6F' against the official STMicroelectronics datasheet to confirm pinout compatibility and package dimensions. Ensure the selected variant matches the required operating temperature range and voltage specifications for the target application environment.

Real Time Clock Selection Notes

Select this component when an integrated crystal solution is preferred to reduce board space and assembly complexity. The M41T83ZMY6F is suitable for designs requiring I2C connectivity and non-volatile timekeeping with minimal external component count compared to variants requiring external crystals.

Real Time Clock Part Context

This part belongs to the M41T8x family of RTCs from STMicroelectronics. While other members like the M41T82 use SO-8 packages with external crystals, the M41T83 series specifically offers the SOX18 package with an embedded crystal, simplifying the design process for compact applications.

Real Time Clock Replacement Considerations

Direct replacements within the same family include the M41T83SMY6F, which shares the 18-SOX package and embedded crystal architecture. Verify that any substitute maintains the same I2C address configuration and register map compatibility.