BQ4850YMA-85N Product Details

Product Specifications

The BQ4850YMA-85N is a sophisticated, high-precision Real-Time Clock (RTC) module integrated with a microprocessor supervisory circuit. This product is designed to provide reliable timekeeping, memory backup, and power-fail management functionalities. Key specifications include:

• Timekeeping Accuracy: Incorporates a high-accuracy crystal oscillator.

• Power Supply Voltage: Operates on a 4.5V to 5.5V supply, ideal for 5V systems.

• Temperature Range: Functional temperature range from -40°C to +85°C.

• Memory Backup: Features a built-in battery backup system for uninterrupted timekeeping and memory preservation during power outages.

• Package Type: Available in a 24-pin SOIC package for ease of integration.

• Interfaces: Provides a simple, parallel interface for easy integration with microprocessors.

• Additional Features: Includes watchdog timer, power-on reset, and battery-low detection functionalities for comprehensive system management.

Product Introduction

The BQ4850YMA-85N is engineered to meet the demands of complex systems requiring accurate timekeeping along with enhanced system reliability through power monitoring and fail-safe operations. Its integrated memory backup function ensures data preservation during power failures, making it an excellent choice for critical data logging and time-sensitive applications. The inclusion of supervisory functions such as the watchdog timer and power-on reset further enhances system stability and reliability. This RTC module is a versatile solution designed to address the needs of advanced electronic systems.

Application Scope

The BQ4850YMA-85N is versatile, finding applications across various fields:

• Computing: Suitable for servers, personal computers, and networking devices where accurate timekeeping and system reliability are crucial.

• Industrial Systems: Ideal for industrial control systems, automation equipment, and other applications requiring uninterrupted operation and data integrity.

• Telecommunications: In communication infrastructure and equipment for timestamping and system monitoring.

• Medical Devices: For medical monitoring and diagnostic equipment needing precise timekeeping and reliable operation.

• Automotive Electronics: In vehicle telematics, navigation systems, and black box recorders for accurate time stamping and data logging.

Frequently Asked Questions

Q: What is the role of the watchdog timer in the BQ4850YMA-85N?

A: The watchdog timer helps prevent system lock-up by resetting the system if the software becomes unresponsive, enhancing the overall reliability of the device it's integrated with.

Q: How does the battery backup function work?

A: In the event of a power failure, the battery backup system automatically switches on to maintain timekeeping and preserve memory content, ensuring data integrity and continuous operation.

Q: Can the BQ4850YMA-85N be used in battery-powered applications?

A: While designed for 5V systems, its low-power consumption features and battery backup make it suitable for applications where power efficiency is a concern, including battery-powered devices.