Texas Instruments

BQ4802YDWR

BQ4802YDWR Description

The BQ4802YDWR is a high-performance Real-Time Clock (RTC) and calendar IC from Texas Instruments, designed for a wide range of applications requiring precise timekeeping and calendar functions. This device operates within a temperature range of 0°C to 70°C, making it suitable for various industrial and consumer environments. It features a surface-mount package, specifically in a 28-pin SOIC format, which is ideal for compact and space-constrained designs.

The BQ4802YDWR is powered by a supply voltage ranging from 4.5V to 5.5V, ensuring compatibility with standard power supplies. Additionally, it supports a battery backup supply voltage between 2.4V and 4V, providing reliable timekeeping even during power outages. The device consumes a maximum of 1.5mA during timekeeping operations, making it energy-efficient and suitable for battery-operated systems.

BQ4802YDWR Features

The BQ4802YDWR offers a comprehensive set of features that enhance its functionality and versatility:

• Alarm Functionality: The device includes an alarm feature that can be programmed to trigger at specific times, making it ideal for applications requiring scheduled events or reminders.
• Daylight Savings and Leap Year Support: The BQ4802YDWR automatically adjusts for daylight savings time and leap years, ensuring accurate timekeeping throughout the year without manual intervention.
• Supervisor and Watchdog Timer: These features provide system monitoring and reset capabilities, enhancing the reliability and stability of the host system.
• Parallel Interface: The device communicates via a parallel interface, allowing for efficient data transfer and integration with various microcontrollers and processors.
• 12/24 Hour Time Format: The BQ4802YDWR supports both 12-hour and 24-hour time formats, providing flexibility to meet different user preferences and application requirements.

BQ4802YDWR Applications

The BQ4802YDWR 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 automation home systems that require precise timekeeping and calendar functions.
• Industrial Control Systems: Suitable for industrial applications where time-stamped data logging and event scheduling are necessary.
• Medical Devices: The device's reliability and accuracy make it a good fit for medical equipment that requires precise timing for monitoring and diagnostic functions.
• Telecommunications: The BQ4802YDWR can be used in telecom systems for time synchronization and event logging.

Conclusion of BQ4802YDWR

The BQ4802YDWR from Texas Instruments is a robust and versatile RTC and calendar IC that offers a wide range of features and benefits. Its support for alarm functions, daylight savings, leap year adjustments, and supervisor capabilities make it a reliable choice for applications requiring precise timekeeping. The device's energy efficiency and compatibility with both standard power supplies and battery backups ensure its suitability for a variety of environments. With its parallel interface and flexible time format options, the BQ4802YDWR is an excellent choice for designers looking to integrate reliable timekeeping into their systems.