STMicroelectronics

M41T56M6E

M41T56M6E Description

The M41T56M6E from STMicroelectronics is a real-time clock/calendar (RTC) IC designed for precision timekeeping in embedded systems. Operating within a 4.5V to 5.5V supply range, it integrates a 56-byte NVSRAM for non-volatile data storage, ensuring data retention during power loss. The device communicates via I2C interface, offering seamless integration with microcontrollers. With a low timekeeping current of 100µA (typical), it is optimized for power-sensitive applications. The 24-hour time format (HH:MM:SS) and leap year compensation enhance accuracy, making it suitable for long-term scheduling tasks.

M41T56M6E Features

• Clock/Calendar Functionality: Tracks seconds, minutes, hours, day, date, month, and year with leap year correction.
• 56B NVSRAM: Non-volatile storage for critical data, eliminating the need for external EEPROM.
• Wide Voltage Range: Supports 4.5V–5.5V (main supply) and 2.5V–3.5V (battery backup) for flexible power configurations.
• Low Power Consumption: 100µA typical timekeeping current extends battery life in backup mode.
• Surface-Mount Package: 8-SOIC form factor for compact PCB designs.
• Industrial Reliability: REACH unaffected and MSL 1 (unlimited) for robust performance in harsh environments.

M41T56M6E Applications

• Industrial Automation: Timestamping for data loggers and event recorders.
• Medical Devices: Accurate timekeeping for patient monitoring systems.
• Smart Meters: Energy consumption tracking with battery-backed RTC.
• Telecom Equipment: Synchronization in network infrastructure.
• Consumer Electronics: Appliances requiring scheduled operations (e.g., smart ovens, HVAC systems).

Conclusion of M41T56M6E

The M41T56M6E stands out for its integrated NVSRAM, low power consumption, and high accuracy, making it ideal for applications demanding reliable timekeeping with minimal external components. While obsolete, its legacy design remains relevant for systems requiring battery-backed RTCs with non-volatile storage. Engineers should evaluate alternatives for new designs but may consider this IC for legacy maintenance or specific industrial use cases.