BQ4845YS-A4TR Product Details

Product Specifications

The BQ4845YS-A4TR is a sophisticated Real-Time Clock (RTC) module, engineered for precision and reliability in timekeeping and system management. It features an integrated battery-backed SRAM, calendar, and programmable alarms, making it a comprehensive solution for a wide range of applications. Key specifications include:

• Timekeeping Accuracy: Built with a precision crystal oscillator for high-accuracy time and date tracking.

• Power Supply Voltage: Designed for a 4.5V to 5.5V supply voltage, catering to standard 5V systems.

• Temperature Range: Functions reliably within a -40°C to +85°C temperature range, suitable for various operating environments.

• Memory: Includes integrated battery-backed SRAM for reliable data retention during power loss.

• Interface: Provides a parallel interface for seamless integration with microprocessors.

• Package Type: Available in a 28-pin SOIC package, facilitating easy mounting and compatibility with different board layouts.

• Additional Features: Features automatic power-fail detection, battery switch-over, programmable alarms, and a watchdog timer for enhanced functionality and system reliability.

Product Introduction

The BQ4845YS-A4TR RTC module excels in maintaining accurate timekeeping and ensuring data integrity through its integrated SRAM, supported by a battery backup. This makes it indispensable for applications where losing data during power failures is not an option, such as critical data logging and time-sensitive operations. With its programmable alarms and watchdog timer, the BQ4845YS-A4TR supports complex system requirements, providing flexibility and ensuring stability across a broad range of applications.

Application Scope

This RTC module is ideally suited for several key sectors:

• Computing: Essential for servers, personal computers, and networking equipment, ensuring system time accuracy and maintaining configuration data.

• Industrial Automation: Perfect for control systems, monitoring equipment, and data loggers requiring consistent operation and data preservation.

• Telecommunications: Utilized in network infrastructure for accurate time-stamping and maintaining operational logs.

• Medical Devices: Important for medical monitoring and diagnostic equipment where precise timing and reliable data storage are crucial.

• Automotive Electronics: Suitable for navigation systems, telematics, and event recording systems that depend on precise timekeeping and data logging.

Frequently Asked Questions

Q: How does the BQ4845YS-A4TR handle power interruptions?

A: It automatically switches to its battery backup, continuing clock operations and preserving SRAM contents, thus ensuring data protection and uninterrupted functionality.

Q: What are the programmable alarms used for?

A: Programmable alarms can be set to initiate specific tasks or serve as reminders at pre-set times, aiding in efficient system management and operation.

Q: Can the watchdog timer be customized in the BQ4845YS-A4TR?

A: Yes, the watchdog timer is adjustable to suit specific application needs, including the option to disable it, offering flexibility in system design.