BQ4845S-A4N Product Details

Product Specifications of BQ4845S-A4N

The BQ4845S-A4N is a Real-Time Clock (RTC) module developed by Texas Instruments, designed to offer precise timekeeping alongside integrated data retention capabilities. This device is tailored for applications that necessitate accurate time tracking and the safeguarding of critical data during power losses. Its primary features include:

• Timekeeping Accuracy: Employs a high-precision crystal oscillator to ensure reliable tracking of time and date.

• Power Supply Voltage: Functions optimally within a 4.5V to 5.5V supply voltage range, accommodating both low-power and standard power requirements.

• Temperature Range: Capable of stable operation across a temperature range from -40°C to +85°C, suitable for various environmental conditions.

• Memory Backup: Features integrated battery-backed SRAM, essential for preserving data during power interruptions.

• Interface: Offers a parallel interface for straightforward integration with microcontrollers and processors.

• Package Type: Comes in a 28-pin SOIC package, providing a space-efficient solution for system designs.

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

Product Introduction of BQ4845S-A4N

Designed for precision and reliability, the BQ4845S-A4N RTC module is an ideal component for systems requiring both accurate timekeeping and data integrity during power outages. Its versatility, owing to low power consumption and a wide operating voltage range, makes it perfect for a vast array of applications, including battery-powered devices, industrial automation, telecommunications, automotive systems, and consumer electronics. The inclusion of features such as programmable alarms and watchdog timers offers additional flexibility, making it a comprehensive solution for sophisticated electronic systems.

Application Scope of BQ4845S-A4N

This RTC module is suited for numerous sectors due to its comprehensive feature set:

• Consumer Electronics: Essential for smart wearables, home automation devices, and other personal electronic gadgets that demand precise timekeeping.

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

• Automotive Systems: Suitable for in-vehicle electronics, like navigation systems and event loggers, that rely on accurate timekeeping.

• Telecommunications: Crucial for network infrastructure equipment needing precise timekeeping for data logging and operational integrity.

• Medical Devices: Important for patient monitoring systems and medical recording devices, where accurate timing is crucial for data collection and patient care.

Frequently Asked Questions of BQ4845S-A4N

Q: How does the BQ4845S-A4N ensure data integrity during power outages?

A: It automatically switches to battery backup mode, maintaining the clock's operation and preserving the SRAM's contents, thus ensuring uninterrupted functionality and data protection.

Q: What advantages does the BQ4845S-A4N offer for battery-operated devices?

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

Q: Can the programmable alarm be customized for specific needs?

A: Yes, the programmable alarm function can be configured to trigger specific events or reminders at predetermined times, offering flexibility in system design and functionality.