STMicroelectronics M41T81SMY6 Real-Time Clock

The M41T81SMY6 is a low-power serial real-time clock (RTC) with a built-in 32.768 kHz oscillator from STMicroelectronics. This highly integrated timekeeping device offers a wide range of features and is designed to provide precise time and date information for a variety of applications, including computers, industrial systems, consumer electronics, and embedded systems.

Featuring a serial I2C interface, the M41T81SMY6 allows easy integration into most microcontroller-based systems. Its low power consumption makes it an ideal choice for battery-powered devices, ensuring that timekeeping functions continue even when the main power supply is turned off. With a supply voltage range of 2.7V to 5.5V, it is versatile enough to be used in both 3V and 5V systems.

The M41T81SMY6 includes many useful timekeeping features such as:

• Counters for seconds, minutes, hours, day, date, month, and year
• Automatic leap year compensation up to the year 2099
• Programmable alarm and interrupt function
• Integrated oscillator stop detection, which indicates if the clock has stopped
• Low battery detection circuitry

One of the key benefits of the M41T81SMY6 is its programmable alarm function, which can be set to a specific time and date, allowing for precise scheduling of events or wake-up signals in embedded systems. Additionally, the oscillator stop detection feature ensures data integrity by providing a flag when the timekeeping has been interrupted, which is critical for applications that require consistent and reliable time information.

STMicroelectronics has packaged the M41T81SMY6 in an 8-pin SOIC (Small Outline Integrated Circuit), making it compact and easy to incorporate into space-constrained designs. The RTC is also compliant with RoHS (Restriction of Hazardous Substances), ensuring it meets environmental standards for electronic components.

Overall, the M41T81SMY6 from STMicroelectronics is a robust and feature-rich real-time clock that provides an ideal timekeeping solution for a wide range of electronic applications.