STMicroelectronics

M41ST95WMX6TR

M41ST95WMX6TR Description

The M41ST95WMX6TR is a highly integrated Real-Time Clock (RTC) and Calendar IC designed by STMicroelectronics. This device features a robust set of functionalities including timekeeping, alarm, leap year compensation, and a watchdog timer. It is designed for surface-mount applications and is housed in a Tape & Reel (TR) package, making it suitable for automated assembly processes. The M41ST95WMX6TR operates within a supply voltage range of 2.7V to 3.6V and consumes a maximum of 1.4mA during timekeeping operations, ensuring low power consumption. The device also supports a battery backup supply voltage range of 2.5V to 3.5V, providing reliable timekeeping even in the event of a main power failure.

M41ST95WMX6TR Features

• Clock and Calendar Functionality: The M41ST95WMX6TR maintains accurate timekeeping in the format of HH:MM:SS:hh (24-hour format), ensuring precise time management.
• Alarm and Timer Features: Equipped with an alarm function and a watchdog timer, this IC can generate alerts and manage system supervision tasks efficiently.
• Non-Volatile Static RAM (NVSRAM): The device includes 44 bytes of NVSRAM, providing additional storage for critical data that needs to be preserved even when power is lost.
• Square Wave Output: This feature allows the M41ST95WMX6TR to generate a square wave output, which can be used for various timing applications.
• SPI Interface: The M41ST95WMX6TR communicates via the SPI interface, making it compatible with a wide range of microcontrollers and systems.
• Low Power Consumption: With a maximum timekeeping current of 1.4mA at 2.7V to 3.6V, the device is optimized for low power applications, making it ideal for battery-operated devices.
• Compliance and Reliability: The M41ST95WMX6TR is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards. It also has a moisture sensitivity level (MSL) of 1, making it suitable for various environmental conditions.

M41ST95WMX6TR Applications

The M41ST95WMX6TR is well-suited for a variety of applications where accurate timekeeping and reliable data storage are critical. Some specific use cases include:

• Embedded Systems: Ideal for embedded systems that require precise timekeeping and data storage, such as smart meters, medical devices, and industrial controllers.
• Consumer Electronics: Suitable for consumer electronics like digital cameras, portable media players, and smartwatches where low power consumption and accurate timekeeping are essential.
• Automotive Applications: Can be used in automotive systems for time-sensitive operations and data logging.
• Telecommunications: Useful in telecommunication equipment for maintaining accurate time synchronization and logging critical events.

Conclusion of M41ST95WMX6TR

The M41ST95WMX6TR from STMicroelectronics is a versatile and reliable RTC and Calendar IC that offers a comprehensive set of features for accurate timekeeping and data storage. Its low power consumption, robust feature set, and compliance with industry standards make it an excellent choice for a wide range of applications. Despite being marked as obsolete, the M41ST95WMX6TR remains a valuable component for designers looking for a reliable and feature-rich RTC solution.