BQ4845YS-A4 Product Details

Product Specifications of BQ4845YS-A4

The BQ4845YS-A4, developed by Texas Instruments, is a Real-Time Clock (RTC) module renowned for its accuracy and integrated memory backup. This device is designed to ensure precise timekeeping and data preservation across various applications. The module is packed with features to meet the demands of sophisticated electronic systems:

• Timekeeping Accuracy: Utilizes a high-precision crystal oscillator for maintaining accurate time and date, essential for applications where precise timing is crucial.

• Power Supply Voltage: Operates within a 4.5V to 5.5V supply voltage range, making it adaptable to both low-power and standard power setups.

• Temperature Range: Designed to function reliably within a temperature range of -40°C to +85°C, suitable for a wide array of environmental conditions.

• Memory Backup: Features integrated battery-backed SRAM, which is critical for retaining data during power interruptions, thereby ensuring data integrity.

• Interface: Comes with a parallel interface for easy integration with microcontrollers and processors, simplifying communication within electronic systems.

• Package Type: Available in a 28-pin SOIC package, offering a compact solution ideal for space-constrained applications.

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

Product Introduction of BQ4845YS-A4

The BQ4845YS-A4 RTC module is engineered for systems that require not only accurate timekeeping but also the need to preserve data integrity during power outages. Its low power consumption and broad operating voltage range make it an excellent choice for battery-powered devices, as well as applications in industrial automation, telecommunications, automotive systems, and consumer electronics. The device's additional features, such as the programmable alarm and watchdog timer, offer further utility, making it a comprehensive solution for complex electronic systems.

Application Scope of BQ4845YS-A4

This RTC module is well-suited for diverse sectors due to its robust feature set:

• Consumer Electronics: Ideal for wearables, smart appliances, and personal electronic devices that require precise timekeeping.

• Industrial Automation: Perfect for control systems, data loggers, and monitoring equipment where timing accuracy and operational reliability are paramount.

• Automotive Systems: Suitable for in-vehicle electronics, such as navigation systems and event data recorders, where accurate timekeeping is essential.

• Telecommunications Equipment: Critical for network devices like routers and switches that rely on accurate timekeeping for data logging and system integrity.

• Medical Devices: Vital for patient monitoring systems and medical recording devices, where precise timing is crucial for data analysis and patient care.

Frequently Asked Questions of BQ4845YS-A4

Q: How does the BQ4845YS-A4 maintain data integrity during power outages?

A: It automatically transitions to battery backup mode, continuing to power the clock and secure the integrated SRAM's contents, thus ensuring uninterrupted functionality and data protection.

Q: What makes the BQ4845YS-A4 suitable for battery-operated devices?

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

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

A: Yes, the programmable alarm function can be set to trigger specific events or reminders at predetermined times, enhancing system management and operational efficiency.