BQ4802LYDWG4 Product Details

Product Specifications

The BQ4802LYDWG4 is a state-of-the-art Real-Time Clock (RTC) module that combines precision timekeeping with the added advantage of integrated non-volatile (NV) SRAM for data retention. It's designed for a broad spectrum of applications that require accurate time tracking and safeguarding of critical data during power loss. The device's key specifications are as follows:

• Timekeeping Accuracy: Equipped with a precision crystal oscillator, it ensures accurate time and date management.

• Power Supply Voltage: Optimally operates across a supply voltage range of 2.7V to 5.5V, accommodating both low-power and standard applications.

• Temperature Range: Functions effectively within a temperature range from -40°C to +85°C, suitable for a variety of environmental conditions.

• Memory Backup: Features integrated battery-backed NV SRAM for crucial data retention during power interruptions.

• Interface: Offers an I²C interface for straightforward communication with various microcontrollers and processors.

• Package Type: Packaged in a SOIC format, it provides a compact solution for space-constrained applications while ensuring ease of integration.

• Additional Features: Includes automatic power-fail detection, battery switch-over capability, and a programmable alarm function to enhance system management and reliability.

Product Introduction

The BQ4802LYDWG4 RTC module is engineered to meet the critical needs of modern electronic systems requiring precise timekeeping and uninterrupted data preservation. Its low power consumption and wide operating voltage range make it an ideal choice for battery-powered and portable devices, as well as for more demanding applications in industrial, automotive, and telecommunications fields. The inclusion of a battery-backed NV SRAM and programmable alarm function adds valuable flexibility, making it a comprehensive timekeeping solution for complex electronic systems.

Application Scope

This RTC chip finds its application across various sectors, thanks to its robust features:

• Consumer Electronics: Perfect for smartwatches, home automation systems, and personal electronics where precise timing is crucial.

• Industrial Automation: Ideal for timing operations, data logging in control systems, machinery, and monitoring equipment requiring consistent operation and data integrity.

• Automotive Systems: Suitable for in-vehicle electronics, such as navigation systems and event loggers, where accurate time stamping and data logging are essential.

• Telecommunications: Crucial for network hardware like routers and switches, needing precise timekeeping for logging and operational integrity.

• Medical Devices: Essential in medical monitoring systems and recorders, where accurate timing is critical for data analysis and patient care.

Frequently Asked Questions

Q: How does the BQ4802LYDWG4 maintain data integrity during power outages?

A: It automatically switches to its battery backup mode, continuing to power the clock and preserve the contents of the integrated NV SRAM, thus ensuring continuous operation and data protection.

Q: What advantages does the BQ4802LYDWG4 offer for battery-operated devices?

A: Its energy-efficient design and effective battery backup capability make it highly suitable for devices relying on battery power, ensuring extended operational life and reliability.

Q: Can the programmable alarm be tailored for specific tasks?

A: Yes, the programmable alarm function allows for setting specific events or reminders at predetermined times, enhancing system management and operational efficiency.