STMicroelectronics

M41ST87YMX6TR

M41ST87YMX6TR Description

The M41ST87YMX6TR is a highly integrated Real-Time Clock (RTC) and Calendar IC designed by STMicroelectronics. This device is part of the M41ST series and is specifically tailored for applications requiring precise timekeeping and calendar functions. It operates on a supply voltage range of 4.5V to 5.5V and features a maximum timekeeping current of 1mA within this voltage range. The M41ST87YMX6TR is housed in a Surface Mount Tape & Reel (TR) package, making it suitable for automated assembly processes.

This RTC IC offers a memory size of 128 bytes, providing ample space for storing additional data alongside time and calendar information. It supports a time format of HH:MM:SS:hh (24-hour format), ensuring accurate and clear time representation. The M41ST87YMX6TR also includes a battery backup supply voltage range of 2.5V to 5.5V, ensuring continuous operation even during power outages.

M41ST87YMX6TR Features

The M41ST87YMX6TR boasts several advanced features that set it apart from other RTC ICs in the market. Key features include:

• Alarm Functionality: The device supports an alarm feature, allowing users to set specific times for alerts or actions.
• Leap Year Calculation: It automatically adjusts for leap years, ensuring accurate date tracking over extended periods.
• NVSRAM: The inclusion of Non-Volatile Static Random Access Memory (NVSRAM) ensures data retention even when power is lost.
• Square Wave Output: The M41ST87YMX6TR provides a square wave output, which can be used for various timing and synchronization applications.
• Supervisor and Watchdog Timer: These features enhance system reliability by monitoring power supply levels and resetting the system if necessary.
• I2C Interface: The device communicates via the I2C bus, simplifying integration into existing systems.

M41ST87YMX6TR Applications

The M41ST87YMX6TR is ideal for a wide range of applications where accurate timekeeping and calendar functions are essential. Specific use cases include:

• Consumer Electronics: Devices such as digital clocks, smartwatches, and home automation systems benefit from the precise timekeeping and calendar functions.
• Industrial Control Systems: The robustness and reliability of the M41ST87YMX6TR make it suitable for industrial applications where continuous operation and accurate time tracking are critical.
• Telecommunications: In telecom systems, the RTC IC ensures accurate timestamping of events and logs, facilitating efficient network management.
• Medical Devices: The device's ability to maintain accurate time and date information is crucial for medical equipment that requires precise time tracking for diagnostics and monitoring.

Conclusion of M41ST87YMX6TR

The M41ST87YMX6TR from STMicroelectronics is a versatile and reliable RTC IC that offers a comprehensive set of features for precise timekeeping and calendar functions. Its robust design, low power consumption, and advanced features such as alarm, leap year calculation, and NVSRAM make it an excellent choice for a variety of applications. Despite being marked as obsolete, the M41ST87YMX6TR remains a valuable component for systems requiring accurate and reliable time management.