M41T93SMY6E

Real Time Clock Overview

The M41T93SMY6E is a low-power serial SPI bus real-time clock (RTC) manufactured by STMicroelectronics. It features an embedded 32.768 kHz crystal within the SOX18 package, eliminating the need for external oscillator components. The device includes automatic power-failure detection with seamless switching to a backup battery supply. Key specifications include a 2.0 V to 5.5 V operating voltage range and ultra-low battery current consumption of 365 nA. Factory calibration provides typical accuracy of ±5 ppm after reflow processes.

Real Time Clock Feature Summary

• Integrated SPI interface with automatic address increment
• Embedded 32.768 kHz crystal in SOX18 package
• Automatic power-failure detection and battery switchover
• Factory calibrated accuracy of ±5 ppm typical

Real Time Clock Applications

• Consumer electronics requiring precise timekeeping
• Industrial systems needing non-volatile clock/calendar functions
• Data logging equipment with watchdog timer requirements

Real Time Clock Procurement Notes

Verify the specific suffix 'MY6E' against official STMicroelectronics documentation to confirm RoHS compliance status and exact packaging configuration. Ensure design compatibility with the SOX18 footprint and validate that the embedded crystal meets project frequency stability requirements without external components.

Real Time Clock Selection Notes

Select this component when an SPI interface is preferred over I2C and board space constraints prohibit external crystals. The M41T93SMY6E is suitable for designs requiring high accuracy without manual calibration, leveraging its factory-trimmed performance. Confirm that the system voltage remains within the 2.0 V to 5.5 V range during all operational states.

Real Time Clock Part Context

This part belongs to the M41T93 series of real-time clocks, which are designed for applications requiring reliable timekeeping with minimal external support circuitry. The series distinguishes itself through integrated oscillators and robust power management features, catering to both consumer and industrial markets seeking compact RTC solutions.

Real Time Clock Replacement Considerations

Direct replacements must maintain SPI compatibility and SOX18 packaging. Verify if alternative parts offer similar embedded crystal integration and comparable battery current consumption levels to ensure no redesign is necessary.