The MCP79401-I/SN from Microchip Technology is a highly integrated Real-Time Clock/Calendar (RTCC) optimized for time tracking and data storage applications. This compact device provides complete timekeeping capabilities with the added advantage of a unique ID and a user EEPROM.

Key Features

• Timekeeping: Accurately keeps track of seconds, minutes, hours, days, weeks, months, and years until the year 2399. It also compensates for leap years.
• On-Chip EEPROM: 64 bytes of EEPROM allow for data storage, which is essential for applications requiring data logging or configuration settings that need to be preserved during power loss.
• Unique ID: An integrated factory-programmed 64-bit MAC (Media Access Control) address provides a unique identifier for networked devices.
• Power Management: Features a battery backup input for continuous timekeeping and has low power consumption, making it ideal for battery-powered applications.
• Alarm Function: Includes multi-functional alarms that can be set to a specific time or date, providing additional utility for reminder or scheduling purposes.
• Communication Interface: Utilizes an I2C™ serial interface for communication, facilitating easy integration with most microcontrollers.
• Package: Available in an 8-pin SN (SOIC) package, which is suitable for surface-mount technology (SMT) and occupies minimal space on a PCB.

Applications

The MCP79401-I/SN is versatile and can be used in a wide range of applications, including:

• Smart Energy (e.g., smart meters)
• Home Appliances (e.g., ovens, refrigerators)
• Automotive electronics
• Industrial and Medical devices
• Consumer electronics

With its combination of precise timekeeping, data storage, and unique identification features, the MCP79401-I/SN is a reliable choice for any application that requires an accurate real-time clock or data logging capabilities.