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MCP795W21T-I/ST

MCP795W21T-I/ST Description

The MCP795W21T-I/ST is a highly integrated Real Time Clock (RTC) and Calendar IC designed by Microchip Technology. This device is ideal for applications requiring precise timekeeping and calendar functions, combined with additional features such as EEPROM, SRAM, and a watchdog timer. The MCP795W21T-I/ST operates within a supply voltage range of 1.8V to 3.6V and features a maximum timekeeping current of 1µA at 1.8V to 5.5V, ensuring low power consumption and long battery life. The device is housed in a 14-TSSOP package and is available in a Tape & Reel (TR) format, making it suitable for surface mount applications.

MCP795W21T-I/ST Features

The MCP795W21T-I/ST offers a comprehensive set of features that enhance its functionality and versatility:

• Clock/Calendar Functionality: The device supports both 12-hour and 24-hour time formats (HH:MM:SS:hh) and includes a leap year calculation feature, ensuring accurate timekeeping over extended periods.
• Memory: It features 64 bytes of EEPROM and SRAM, providing additional storage for user data and system parameters.
• Alarm and Timer Functions: The MCP795W21T-I/ST includes an alarm function that can be programmed to generate an interrupt at a specific time. Additionally, it features a watchdog timer to prevent system lock-ups.
• Square Wave Output: The device can generate a square wave output, which can be used for various timing applications.
• Unique ID: Each MCP795W21T-I/ST comes with a unique identification number, which can be useful for device tracking and authentication.
• Interface: The device communicates via the SPI interface, ensuring compatibility with a wide range of microcontrollers and systems.
• Battery Backup: The device supports a backup battery supply voltage range of 1.3V to 3.6V, ensuring continuous operation during power outages.
• Compliance: The MCP795W21T-I/ST is REACH unaffected and RoHS3 compliant, meeting environmental and regulatory standards.

MCP795W21T-I/ST Applications

The MCP795W21T-I/ST is well-suited for a variety of applications where accurate timekeeping and calendar functions are essential:

• Consumer Electronics: Ideal for devices such as digital clocks, alarm clocks, and home automation systems where precise timekeeping is required.
• Industrial Control Systems: Suitable for systems that require accurate time logging and scheduling, such as PLCs and SCADA systems.
• Medical Devices: Can be used in medical equipment where accurate time and date recording are crucial for patient monitoring and data logging.
• Telecommunications: Useful in network equipment for time synchronization and event logging.
• Automotive: Can be integrated into vehicle systems for timekeeping and diagnostic functions.

Conclusion of MCP795W21T-I/ST

The MCP795W21T-I/ST from Microchip Technology is a versatile and reliable Real Time Clock and Calendar IC. Its low power consumption, extensive feature set, and robust compliance with industry standards make it an excellent choice for a wide range of applications. The combination of EEPROM, SRAM, alarm, watchdog timer, and unique ID features provides additional functionality that sets it apart from similar models. Whether used in consumer electronics, industrial control systems, or other applications, the MCP795W21T-I/ST ensures accurate and reliable timekeeping, making it a valuable component in any system requiring precise time management.