Texas Instruments

BQ3285S-SB2TRG4

BQ3285S-SB2TRG4 Description

The BQ3285S-SB2TRG4 is a highly integrated Real-Time Clock (RTC) and Calendar IC designed by Texas Instruments. This device is ideal for applications requiring precise timekeeping and calendar functions. It features a robust set of functionalities, including alarm, daylight savings, leap year, and non-volatile static RAM (NVSRAM). The BQ3285S-SB2TRG4 operates within a temperature range of 0°C to 70°C and is designed for surface mount applications, making it suitable for a variety of electronic devices.

This IC supports a supply voltage range of 4.5V to 5.5V and a battery supply voltage range of 2.5V to 4V, ensuring reliable operation even in low-power environments. The BQ3285S-SB2TRG4 is housed in a 24-pin SOIC package and is available in tape and reel format, facilitating easy integration into automated assembly processes. It also complies with REACH and ROHS3 standards, ensuring environmental sustainability and regulatory compliance.

BQ3285S-SB2TRG4 Features

The BQ3285S-SB2TRG4 offers several unique features that set it apart from similar models:

• Alarm Functionality: The built-in alarm feature allows for precise scheduling and timing, making it ideal for applications requiring periodic wake-ups or notifications.
• Daylight Savings and Leap Year Support: These features ensure accurate timekeeping throughout the year, including adjustments for daylight savings and leap years.
• NVSRAM: The inclusion of 114 bytes of non-volatile static RAM provides additional storage for critical data, ensuring data integrity even during power loss.
• Square Wave Output: This feature enables the generation of a square wave signal, useful for clocking other devices or synchronizing operations.
• Parallel Interface: The parallel interface allows for efficient communication with other system components, facilitating fast data transfer and control.

BQ3285S-SB2TRG4 Applications

The BQ3285S-SB2TRG4 is well-suited for a range of applications where accurate timekeeping and calendar functions are essential:

• Consumer Electronics: Ideal for devices such as digital clocks, smart home appliances, and multimedia systems where precise time display and scheduling are required.
• Industrial Automation: Useful in industrial control systems, where accurate timekeeping is crucial for process control and monitoring.
• Medical Equipment: Suitable for medical devices that require reliable timekeeping for diagnostics, monitoring, and data logging.
• Telecommunications: Beneficial in telecom systems for call logging, network synchronization, and maintenance scheduling.

Conclusion of BQ3285S-SB2TRG4

The BQ3285S-SB2TRG4 from Texas Instruments is a versatile and reliable RTC and Calendar IC, offering a comprehensive set of features for precise timekeeping and data storage. Its robust functionality, including alarm, daylight savings, leap year support, and NVSRAM, makes it an excellent choice for a wide range of applications. Despite being marked as obsolete, the BQ3285S-SB2TRG4 remains a valuable component for legacy systems and applications where its unique features are still highly beneficial.