Introducing the M41ST84W: A Versatile Real-Time Clock from STMicroelectronics

The M41ST84W is a state-of-the-art real-time clock and calendar optimized for low power consumption and with a wealth of features designed to serve a broad range of applications. Manufactured by STMicroelectronics, a leader in the semiconductor industry, this integrated circuit offers precision timing, an embedded microprocessor supervisor, and a serial interface to meet the needs of complex digital systems.

Key Features

• Accurate Timekeeping: The device maintains seconds, minutes, hours, day, date, month, and year information, with automatic adjustments for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.
• Low Power Consumption: Designed with power efficiency in mind, the M41ST84W is ideal for battery-powered applications, contributing to longer battery life and reduced maintenance.
• Watchdog Timer: An integrated watchdog timer with a dedicated oscillator ensures reliable operation and system recovery, a crucial feature for systems requiring high levels of safety and reliability.
• Alarm Function: The device includes a programmable alarm output that can be set to a specific moment in time, offering a versatile tool for time-based event management.
• Serial Interface: Communication with the M41ST84W is facilitated through an I2C serial interface, allowing for easy integration into existing designs without the need for complex wiring or additional components.
• Additional Memory: The M41ST84W comes with additional bytes of SRAM, providing extra space for data storage that is protected during power-down events by an automatic battery switch-over system.

Applications

The M41ST84W is suitable for a wide array of applications including, but not limited to:

• Telecommunication systems
• Embedded systems
• Industrial controllers
• Utility meters
• Consumer electronics

With its combination of features and STMicroelectronics' commitment to quality, the M41ST84W is an excellent choice for designers looking to incorporate reliable timekeeping and system management capabilities into their projects.