The M41T81SM6E from STMicroelectronics is a highly integrated, low-power serial real-time clock (RTC) with a built-in 32.768 kHz oscillator. Designed for a wide range of applications, this RTC provides precise timekeeping, with a battery backup option to maintain timekeeping when the main power is off.

Key Features

• Accurate Time-Keeping: The device includes a built-in 32.768 kHz crystal oscillator ensuring high accuracy and minimal drift over time and temperature variations.
• Low Power Consumption: Engineered for battery-powered applications, the M41T81SM6E is optimized for low power consumption, extending the life of backup batteries.
• Serial Interface: The device supports I2C serial interface, allowing for easy integration with most microcontrollers and processors.
• Programmable Alarm: An onboard programmable alarm can be set to wake up or interrupt the host system at a predetermined time, making it ideal for time-critical applications.
• Additional Features: It includes automatic leap year correction, a programmable square wave output, and a watchdog timer to enhance system reliability.

Applications

The versatility of the M41T81SM6E makes it suitable for a diverse range of applications, including:

• Embedded systems
• Utility meters
• Industrial control systems
• Consumer electronics
• Handheld devices

Technical Specifications

The M41T81SM6E operates over a wide voltage range and temperature, making it adaptable to different operating environments:

• Voltage range: 2.7V to 5.5V
• Operating temperature range: -40°C to 85°C
• Packaging: SOX18 (Small Outline Package)

STMicroelectronics' commitment to quality ensures that the M41T81SM6E RTC meets the high standards required for time-critical systems, providing reliable performance and a robust timekeeping solution.