BQ4845YP-A4 Product Details

Product Specifications

The BQ4845YP-A4 is a comprehensive Real-Time Clock (RTC) module that integrates a full suite of features to facilitate precise timekeeping and system management within electronic systems. It includes an integrated battery-backed SRAM, making it a versatile solution for applications requiring accurate time tracking and data preservation. Essential specifications are:

• Timekeeping Accuracy: Incorporates a high-precision crystal oscillator to maintain exact time and date.

• Power Supply Voltage: Optimally designed for a 4.5V to 5.5V supply voltage, suitable for standard 5V logic systems.

• Temperature Range: Ensures reliable operation across a temperature range of -40°C to +85°C.

• Memory: Features integrated battery-backed SRAM for retaining data during power losses.

• Interface: Equipped with a parallel interface, allowing for straightforward communication with microprocessors.

• Package Type: Available in a 24-pin DIP package, which eases integration into various system designs.

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

Product Introduction

The BQ4845YP-A4 RTC module is distinguished for its capacity to provide precise timekeeping along with critical data protection through its integrated SRAM supported by a battery backup. This module is indispensable for applications where data integrity during power failures is critical, such as essential data logging and time-sensitive processes. Its programmable alarms and a watchdog timer make it adaptable for a wide range of applications, enhancing flexibility and ensuring stability across computing, industrial automation, telecommunications, medical devices, and automotive systems.

Application Scope

The BQ4845YP-A4 is ideally suited for a broad spectrum of sectors:

• Computing: Vital for ensuring system time accuracy and configuration data retention in servers, personal computers, and networking hardware.

• Industrial Automation: Perfect for automation systems, monitoring devices, and data loggers that demand consistent operation and data preservation.

• Telecommunications: Key for network infrastructure, providing accurate time-stamping and maintaining operational logs.

• Medical Devices: Critical in medical monitoring and diagnostic systems where precise timing and dependable data storage are paramount.

• Automotive Electronics: Appropriate for navigation systems, telematics, and event data recording systems reliant on accurate timekeeping and data logging.

Frequently Asked Questions

Q: How does the BQ4845YP-A4 ensure data integrity during power failures?

A: It seamlessly transitions to battery backup to maintain clock functions and secure SRAM contents, thus guaranteeing uninterrupted functionality and data preservation.

Q: What are the programmable alarms designed for?

A: Programmable alarms can be configured to initiate specific events or serve as reminders at set times, aiding in efficient system management and scheduling.

Q: Can the watchdog timer be tailored in the BQ4845YP-A4?

A: Yes, the watchdog timer can be customized or disabled to meet particular system requirements, providing flexibility in system design.