Texas Instruments

BQ4847MT

BQ4847MT Description

The BQ4847MT is a Real Time Clock (RTC) IC designed by Texas Instruments, featuring a robust clock/calendar function with a parallel interface. This Through Hole mounted device operates within a temperature range of 0°C to 70°C and is housed in a Tube package, making it suitable for a variety of industrial and consumer applications. The BQ4847MT is powered by a supply voltage ranging from 4.75V to 5.25V and can also utilize a backup battery with a voltage range of 2.3V to 4V, ensuring continuous operation even during power failures.

BQ4847MT Features

The BQ4847MT offers several advanced features that set it apart from other RTC ICs in the market. Key features include:

• Alarm Functionality: The BQ4847MT supports alarm settings, allowing users to schedule specific events or actions at predefined times.
• Daylight Savings and Leap Year Adjustments: This RTC IC automatically adjusts for Daylight Savings Time and Leap Year, ensuring accurate timekeeping year-round.
• Supervisor and Watchdog Timer: The BQ4847MT includes a supervisor function to monitor system voltage and a watchdog timer to prevent system lockups.
• Time Format Flexibility: The device supports both 12-hour and 24-hour time formats, providing flexibility for different user preferences and applications.
• Parallel Interface: The parallel interface allows for efficient data communication, making it ideal for systems requiring high-speed data transfer.
• Compliance and Standards: The BQ4847MT is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards. It also carries an ECCN classification of EAR99 and an HTSUS code of 8542.39.0001.

BQ4847MT Applications

The BQ4847MT is well-suited for applications requiring precise timekeeping and reliable operation. Some specific use cases include:

• Embedded Systems: Ideal for embedded systems where accurate timekeeping is crucial for scheduling and event logging.
• Industrial Control Systems: The robustness and reliability of the BQ4847MT make it suitable for industrial control systems that require continuous operation and precise timing.
• Consumer Electronics: The device's flexibility in time format and alarm functionality make it a good fit for consumer electronics such as digital clocks, home automation systems, and smart appliances.
• Medical Devices: The BQ4847MT's compliance with environmental and safety standards makes it suitable for medical devices that require accurate timekeeping for monitoring and logging patient data.

Conclusion of BQ4847MT

The BQ4847MT from Texas Instruments is a versatile and reliable Real Time Clock IC, offering a comprehensive set of features and benefits. Its robust design, compliance with industry standards, and advanced functionalities make it an excellent choice for a wide range of applications. While the product is now obsolete, it remains a testament to Texas Instruments' commitment to delivering high-quality, reliable solutions for precise timekeeping and system management.