Overview of STMicroelectronics MK41T56N

The STMicroelectronics MK41T56N is a high-performance CMOS Timekeeper® RAM, which integrates a real-time clock/calendar and 114 bytes of static RAM. It is a versatile component designed to address the need for an accurate timekeeping solution in a wide range of applications, including industrial control systems, telecommunications, and consumer electronics.

Key Features

• Real-Time Clock/Calendar: The device accurately tracks seconds, minutes, hours, days, date, month, and year, with automatic leap year compensation valid up to the year 2100.
• Static RAM: 114 bytes of user-accessible nonvolatile memory provide storage for critical data that must be preserved during power loss.
• Battery Backup: An optional external battery can maintain timekeeping and RAM data for over 10 years in the absence of power.
• Programmable Alarm: The MK41T56N features an alarm function that can be set to a specific time, triggering a system response when needed.
• Serial Interface: A serial I²C interface allows for easy integration into a system with minimal I/O lines required.

Applications

The versatility of the MK41T56N makes it suitable for a variety of applications, such as:

• Embedded systems requiring accurate timekeeping
• Data logging equipment
• Utility meters
• POS terminals
• Security systems

Technical Specifications

The device operates over a wide voltage range and features a low power consumption design, making it ideal for battery-powered applications. It is packaged in a 28-pin, 600-mil DIP or SOIC, providing flexibility in hardware design. The MK41T56N also includes a programmable square wave output and is fully compliant with RoHS standards.

Conclusion

The STMicroelectronics MK41T56N is a robust and reliable timekeeping solution that combines the functionality of a real-time clock and additional RAM in a single integrated circuit. Its rich feature set and ease of integration make it an excellent choice for designers looking to incorporate accurate timekeeping and data retention capabilities into their systems.