Texas Instruments

BQ3285LDSSTR

BQ3285LDSSTR Description

The BQ3285LDSSTR is a highly integrated Real Time Clock (RTC) and Calendar IC designed by Texas Instruments. This device is optimized for applications requiring precise timekeeping and calendar functions, offering a comprehensive solution in a compact 24SSOP package. The BQ3285LDSSTR features a parallel interface, making it easy to integrate with various microcontrollers and systems. It operates within a supply voltage range of 2.7V to 5.5V and supports a battery backup supply voltage range of 2.4V to 4V, ensuring reliable timekeeping even during power outages.

The BQ3285LDSSTR is designed for surface mount technology, providing robustness and ease of integration into modern electronic designs. It supports an operating temperature range of 0°C to 70°C, making it suitable for a wide range of industrial and consumer applications. The device includes 242 bytes of non-volatile static RAM (NVSRAM), offering additional storage for critical data that needs to be retained even when power is lost.

BQ3285LDSSTR Features

The BQ3285LDSSTR offers several unique features that set it apart from other RTC ICs in the market:

• Alarm Functionality: The device includes an alarm feature that allows users to set specific times for events, enhancing its utility in applications requiring scheduled operations.
• Daylight Savings Adjustment: The BQ3285LDSSTR supports automatic adjustment for daylight savings time, simplifying time management in regions where this practice is observed.
• NVSRAM: The inclusion of 242 bytes of NVSRAM provides additional storage for critical data, ensuring that important information is not lost during power interruptions.
• Time Format Flexibility: The BQ3285LDSSTR supports both 12-hour and 24-hour time formats, offering flexibility to meet different user preferences and application requirements.
• Low Power Consumption: With a maximum timekeeping current of 100µA at 3V, the BQ3285LDSSTR is designed to minimize power consumption, making it ideal for battery-powered applications.
• Compliance and Standards: The BQ3285LDSSTR is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety standards.

BQ3285LDSSTR Applications

The BQ3285LDSSTR is ideal for a variety of applications requiring precise timekeeping and calendar functions:

• Consumer Electronics: Ideal for devices such as digital clocks, home automation systems, and smart appliances that require accurate timekeeping and calendar functions.
• Industrial Control Systems: Suitable for industrial applications where precise time synchronization and event scheduling are critical, such as in manufacturing plants and process control systems.
• Medical Devices: The BQ3285LDSSTR can be used in medical devices that require accurate time tracking for patient monitoring and treatment scheduling.
• Telecommunications: The device is well-suited for telecom applications where accurate timekeeping is essential for network synchronization and event logging.

Conclusion of BQ3285LDSSTR

The BQ3285LDSSTR from Texas Instruments is a versatile and reliable RTC and Calendar IC that offers a comprehensive set of features for precise timekeeping and data storage. Its low power consumption, flexible time format options, and support for daylight savings make it an excellent choice for a wide range of applications. The inclusion of NVSRAM and alarm functionality further enhances its utility, making it a robust solution for both consumer and industrial applications. Despite being marked as obsolete, the BQ3285LDSSTR remains a valuable component for designers looking for a reliable and feature-rich RTC solution.