BQ4845YS-A4NTR Product Details

Product Specifications

The BQ4845YS-A4NTR is a highly integrated Real-Time Clock (RTC) module, crafted to deliver precise timekeeping alongside robust system management capabilities. This module includes an integrated battery-backed SRAM, offering an all-in-one solution for applications requiring accurate time tracking and data preservation. Its primary specifications are as follows:

• Timekeeping Accuracy: Utilizes a high-accuracy crystal oscillator for precise time and date maintenance.

• Power Supply Voltage: Designed for operation within a 4.5V to 5.5V range, making it suitable for 5V logic systems.

• Temperature Range: Capable of functioning reliably across a wide temperature range from -40°C to +85°C.

• Memory: Features integrated battery-backed SRAM, ensuring data retention during power interruptions.

• Interface: Provides a parallel interface, enabling straightforward integration with microprocessors.

• Package Type: Delivered in a 28-pin SOIC package, which facilitates ease of use in various design configurations.

• Additional Features: Includes automatic power-fail detection, battery switch-over, programmable alarms, and a watchdog timer, enhancing both functionality and reliability.

Product Introduction

The BQ4845YS-A4NTR RTC module is distinguished by its ability to maintain accurate timekeeping and secure data through its integrated SRAM with battery backup. This combination is critical for applications where data loss during power outages is unacceptable, including essential data logging and time-sensitive processes. Its additional features, such as programmable alarms and a watchdog timer, make it a highly versatile choice for a vast range of applications, from computing and industrial automation to telecommunications, medical devices, and automotive systems.

Application Scope

This RTC module finds its utility in several key industries:

• Computing: Crucial in maintaining system time accuracy and configuration data in servers, PCs, and networking devices.

• Industrial Automation: Ideal for control systems, monitoring devices, and data loggers that require consistent operation and data integrity.

• Telecommunications: Essential for network infrastructure equipment, ensuring accurate time-stamping and log maintenance.

• Medical Devices: Vital in medical monitoring and diagnostic equipment, where precise timing and reliable data storage are paramount.

• Automotive Electronics: Suitable for use in vehicle navigation systems, telematics, and event data recording systems reliant on precise timekeeping and data logging.

Frequently Asked Questions

Q: How does the BQ4845YS-A4NTR manage power outages?

A: It automatically switches to battery backup mode to maintain clock functionality and preserve SRAM contents, thus ensuring continuous operation and data protection.

Q: What functionality do the programmable alarms provide?

A: Programmable alarms can be set to trigger specific actions or reminders at predetermined times, facilitating efficient system management and scheduling.

Q: Is the watchdog timer in the BQ4845YS-A4NTR configurable?

A: Yes, the watchdog timer can be adjusted or disabled according to specific system requirements, offering flexibility in system design.