STMicroelectronics

M41T256YMT7F

M41T256YMT7F Description

The M41T256YMT7F is a high-performance Real-Time Clock (RTC) and Calendar IC from STMicroelectronics, part of the renowned Timekeeper® series. This device is designed for surface-mount applications and is packaged in a Tape & Reel (TR) format, making it suitable for automated assembly processes. Although the product is now obsolete, it remains a valuable component for applications requiring precise timekeeping and non-volatile memory storage.

The M41T256YMT7F features a 32KB non-volatile static RAM (NVSRAM) that ensures data retention even in the absence of main power supply. It operates within a supply voltage range of 4.5V to 5.5V and consumes a maximum of 2.5mA during timekeeping operations. The device also supports a battery backup supply voltage range of 2.5V to 3.5V, providing reliable timekeeping during power outages.

M41T256YMT7F Features

• Clock/Calendar Functionality: The M4T1256YMT7F maintains accurate timekeeping in a 24-hour format (HH:MM:SS:hh), ensuring precise time tracking.
• Non-Volatile Memory: Equipped with 32KB of NVSRAM, it offers robust data storage capabilities that are retained even when the main power supply is lost.
• Leap Year Calculation: The device automatically accounts for leap years, ensuring accurate calculations date over extended periods.
• I2C Interface: The M41T256YMT7F communicates via the I2C bus, facilitating easy integration into various electronic systems.
• Low Power Consumption: With a maximum timekeeping current of 2.5mA at 4.5V to 5.5V, it is designed for energy-efficient operation.
• Compliance and Standards: The device is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety regulations.
• Moisture Sensitivity Level (MSL): Rated at MSL 1 (Unlimited), it is suitable for a wide range of environmental conditions without the need for special handling.

M41T256YMT7F Applications

The M41T256YMT7F is ideal for applications that require reliable timekeeping and data storage, such as:

• Embedded Systems: Provides accurate timekeeping and data retention in embedded devices.
• Industrial Control Systems: Ensures precise timing and data integrity in industrial automation and control systems.
• Telecommunications: Maintains accurate time synchronization in communication infrastructure.
• Consumer Electronics: Enhances the functionality of consumer devices by providing reliable time and data storage.
• Medical Devices: Ensures accurate timekeeping and data retention in medical equipment, crucial for patient monitoring and data logging.

Conclusion of M41T256YMT7F

The M41T256YMT7F from STMicroelectronics is a versatile and reliable RTC and Calendar IC, offering precise timekeeping and robust data storage capabilities. Despite its obsolescence, it remains a valuable component for applications requiring accurate time tracking and non-volatile memory. Its low power consumption, leap year calculation, and compliance with environmental standards make it a preferred choice in various industries. While newer alternatives may be available, the M41T256YMT7F continues to serve as a reliable solution for time-sensitive applications.