Microchip Technology

MCP79521-I/MS  

Real Time Clocks ICs

MCP79521-I/MS Description

The MCP79521-I/MS is a highly versatile and reliable Real-Time Clock (RTC) and Calendar IC designed by Microchip Technology. This device is part of the Clock/Timing ICs category and is specifically engineered to provide accurate timekeeping and calendar functions in a wide range of electronic applications. The MCP79521-I/MS is housed in a Surface Mount package, making it suitable for compact and space-constrained designs. It operates within a supply voltage range of 1.8V to 3.6V and features a maximum timekeeping current of just 1µA, ensuring minimal power consumption and extended battery life.

MCP79521-I/MS Features

The MCP79521-I/MS offers a comprehensive set of features that set it apart from similar models in the market. Key features include:

• Alarm Functionality: The device supports alarm functionality, allowing users to set specific times for triggering events or alerts.
• EEPROM Memory: It includes 64 bytes of EEPROM memory, providing additional storage for user-specific data.
• Leap Year Calculation: The calendar function automatically accounts for leap years, ensuring accurate date tracking over extended periods.
• Square Wave Output: The MCP79521-I/MS provides a square output wave, which can be used for various timing applications.
• SRAM: The device also features SRAM, offering additional memory options for temporary data storage.
• Unique ID: Each MCP79521-I/MS comes with a unique identification number, facilitating individual device tracking and management.
• Time Format: The time format is configurable in both 12-hour and 24-hour formats (HH:MM:SS:hh), providing flexibility to suit different user preferences.
• SPI Interface: The device communicates via the SPI interface, ensuring efficient and reliable data transfer with minimal overhead.
• Battery Backup Voltage: The MCP79521-I/MS supports a battery backup voltage range of 1.3V to 3.6V, ensuring continuous operation even during power outages.

MCP79521-I/MS Applications

The MCP79521-I/MS is ideal for a variety of applications where accurate timekeeping and calendar functions are essential. Some specific use cases include:

• Consumer Electronics: Ideal for devices such as digital clocks, smartwatches, and home automation systems where precise time and date tracking are required.
• Industrial Control Systems: Suitable for industrial applications where accurate time logging and event scheduling are critical.
• Medical Devices: Can be used in medical equipment for logging critical events and ensuring accurate timekeeping for patient monitoring and treatment schedules.
• Telecommunications: Useful in telecom systems for timestamping events and managing network operations.
• Automotive: Can be integrated into automotive systems for accurate timekeeping and event logging, enhancing the reliability and functionality of onboard electronics.

Conclusion of MCP79521-I/MS

The MCP79521-I/MS from Microchip Technology is a robust and feature-rich RTC and Calendar IC that offers exceptional performance and reliability. Its low power consumption, extensive feature set, and versatile memory options make it an ideal choice for a wide range of applications. The inclusion of advanced features such as alarm functionality, EEPROM, and unique ID further enhances its utility and sets it apart from competitors. Whether used in consumer electronics, industrial control systems, or other demanding applications, the MCP79521-I/MS provides a reliable and efficient solution for accurate timekeeping and calendar management.

MCP79521-I/MS Documents

Download datasheets and manufacturer documentation for MCP79521-I/MS

Datasheets :

MCP7951x/2x      

PCN Packaging :

Packing Changes 10/Oct/2016       Label and Packing Changes 23/Sep/2015      

PCN Design/Specification :

MCP7951X/MCP7952X 03/Mar/2018       MCP7951x/MCP7952x Datasheet 23/Nov/2023      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH