Texas Instruments

BQ3285LFSS-A1G4  

Real Time Clocks ICs

BQ3285LFSS-A1G4 Description

The BQ3285LFSS-A1G4 is a high-performance clock/calendar integrated circuit (IC) designed by Texas Instruments. This IC is part of the BQ3285 family and is known for its robustness and versatility in various electronic applications. It features a parallel interface and is housed in a 24SSOP package, making it suitable for surface-mount applications. The BQ3285LFSS-A1G4 operates within a temperature range of 0°C to 70°C and is powered by a supply voltage of 2.7V to 5.5V. It also supports a battery supply voltage range of 2.4V to 4V, ensuring reliable timekeeping even during power outages.

This IC is equipped with a non-volatile static RAM (NVSRAM) of 242 bytes, providing ample storage for critical data. The timekeeping current is maximized at 100µA at 3V, making it energy-efficient. The BQ3285LFSS-A1G4 supports both 12-hour and 24-hour time formats (HH:MM:SS) and includes advanced features such as an alarm, daylight savings adjustment, leap year compensation, and a square wave output. These features make it an ideal choice for applications requiring precise timekeeping and data storage.

BQ3285LFSS-A1G4 Features

• Clock/Calendar Functionality: The BQ3285LFSS-A1G4 provides accurate timekeeping with support for both 12-hour and 24-hour formats, ensuring flexibility in various applications.
• Non-Volatile Static RAM (NVSRAM): With 242 bytes of NVSRAM, this IC can store essential data that persists even when power is lost.
• Energy Efficiency: The maximum timekeeping current of 100µA at 3V ensures minimal power consumption, making it suitable for battery-operated devices.
• Advanced Features: Includes an alarm function, daylight savings adjustment, leap year compensation, and a square wave output, enhancing its functionality and versatility.
• Wide Operating Voltage Range: Operates within a supply voltage range of 2.7V to 5.5V and a battery supply voltage range of 2.4V to 4V, providing flexibility in power supply options.
• Parallel Interface: The parallel interface allows for straightforward integration with other system components.
• Surface Mount Package: The 24SSOP package is designed for surface-mount technology, facilitating compact and reliable PCB designs.
• Compliance and Standards: The BQ3285LFSS-A1G4 is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards.

BQ3285LFSS-A1G4 Applications

The BQ3285LFSS-A1G4 is ideal for a wide range of applications where precise timekeeping and reliable data storage are essential. Some specific use cases include:

• Embedded Systems: Ideal for embedded systems requiring accurate timekeeping and data storage, such as industrial controllers and smart meters.
• Consumer Electronics: Suitable for consumer devices like digital clocks, alarm clocks, and home automation systems.
• Telecommunications: Can be used in telecommunication equipment for logging and timestamping events.
• Automotive: Applicable in automotive systems for time-sensitive operations and data logging.
• Medical Devices: Useful in medical devices for recording and storing critical data related to patient monitoring and equipment operation.

Conclusion of BQ3285LFSS-A1G4

The BQ3285LFSS-A1G4 from Texas Instruments is a versatile and reliable clock/calendar IC that offers a comprehensive set of features for precise timekeeping and data storage. Its wide operating voltage range, energy efficiency, and advanced functionalities make it a superior choice over similar models. The IC's compliance with environmental and safety standards ensures it meets the requirements of modern electronics manufacturing. Despite being marked as obsolete, the BQ3285LFSS-A1G4 remains a valuable component for applications requiring robust timekeeping and data storage solutions.

BQ3285LFSS-A1G4 Documents

Download datasheets and manufacturer documentation for BQ3285LFSS-A1G4