STMicroelectronics M41T81M6TR Real-Time Clock

The M41T81M6TR is a highly integrated, low-power serial real-time clock (RTC) with a built-in 32.768 kHz oscillator from STMicroelectronics. This compact device, housed in an 8-pin SOIC package, provides a full binary-coded decimal (BCD) clock/calendar with programmable alarm features, making it an ideal choice for a wide range of applications including industrial control systems, network servers, medical devices, and consumer electronics.

One of the key features of the M41T81M6TR is its ability to maintain accurate timekeeping with very low power consumption. This is particularly beneficial in battery-powered devices where power efficiency is critical. The RTC operates over a wide voltage range, typically from 2.7V to 5.5V, and includes an automatic power-fail detect and switch circuitry that transitions to battery backup mode during power outages, ensuring uninterrupted timekeeping.

The device offers a rich set of timekeeping functions that include seconds, minutes, hours, day, date, month, year, and century with leap year compensation up to the year 2100. It also provides an alarm function that can be programmed to trigger on a specific second, minute, hour, day, date, month, or even on a combination of these, allowing for versatile scheduling and time-based event management.

Communication with the M41T81M6TR is achieved through an I²C-compatible (two-wire) serial interface, which simplifies integration into existing designs and enables easy communication with microcontrollers and other digital systems. The RTC also includes a programmable square wave output that can serve as a clock reference or as a periodic interrupt for system tasks.

The M41T81M6TR's robust feature set, combined with its low-power operation and flexible programmability, make it a top choice for designers looking for a reliable timekeeping solution. With STMicroelectronics' commitment to quality and long-term availability, this RTC is an excellent selection to meet the timing requirements of today's sophisticated electronic systems.

For more information about the M41T81M6TR, including datasheets and technical documentation, please visit the STMicroelectronics website or contact your local STMicroelectronics sales office.