Texas Instruments

BQ4832YMA-85

BQ4832YMA-85 Description

The BQ4832YMA-85 is a highly reliable and versatile Real-Time Clock (RTC) and Calendar IC designed by Texas Instruments. This component is part of the BQ4832 family and is housed in a 32-pin DIP package, making it suitable for through-hole mounting. It operates within a supply voltage range of 4.5V to 5.5V and is designed to function efficiently within an operating temperature range of 0°C to 70°C. The BQ4832YMA-85 is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental and safety standards.

BQ4832YMA-85 Features

The BQ4832YMA-85 offers several advanced features that set it apart from other RTC ICs in the market. Key features include:

• Alarm Functionality: The IC supports an alarm feature that can be programmed to trigger at specific times, making it ideal for applications requiring precise time-based alerts.
• Supervisor and Watchdog Timer: These features enhance system reliability by monitoring the power supply and resetting the system if necessary, ensuring continuous and error-free operation.
• Time Format: The BQ4832YMA-85 maintains time in a 24-hour format (HH:MM:SS:hh), providing clear and consistent timekeeping.
• Low Power Consumption: With a maximum timekeeping current of 4mA at 4.5V to 5.5V, the BQ4832YMA-85 is designed for energy efficiency, making it suitable for battery-powered applications.
• Parallel Interface: The parallel interface allows for straightforward integration with various microcontrollers and systems, facilitating easy communication and data transfer.
• Moisture Sensitivity Level (MSL): Rated at MSL 1 (Unlimited), the BQ4832YMA-85 is highly resistant to moisture, ensuring long-term reliability in various environmental conditions.

BQ4832YMA-85 Applications

The BQ4832YMA-85 is well-suited for a variety of applications where accurate timekeeping and reliable system monitoring are essential. Some specific use cases include:

• Embedded Systems: Ideal for embedded systems that require precise timekeeping and system monitoring, such as industrial controllers and medical devices.
• Consumer Electronics: Suitable for consumer electronics like digital clocks, alarm systems, and home automation devices.
• Telecommunications: Can be used in telecommunication equipment for time synchronization and system monitoring.
• Automotive: Applicable in automotive systems for timekeeping and monitoring critical functions.
• Power Management: Useful in power management systems for monitoring and controlling power supply and system resets.

Conclusion of BQ4832YMA-85

The BQ4832YMA-85 from Texas Instruments is a robust and feature-rich RTC and Calendar IC that offers significant advantages over similar models. Its low power consumption, advanced alarm and watchdog functionalities, and parallel interface make it a versatile choice for a wide range of applications. Despite being marked as obsolete, the BQ4832YMA-85 remains a reliable option for designers and engineers looking for a high-performance RTC solution. Its compliance with environmental and safety standards further enhances its appeal in the electronics industry.