The RX-8803SA UB-L2 is a real-time clock (RTC) module manufactured by Epson. It's designed for accurate timekeeping in various applications. This module integrates a 32.768 kHz crystal oscillator, providing a stable time base. The 'UB-L2' suffix likely represents a specific package type or a minor revision within the RX-8803SA series, potentially indicating enhanced features or performance improvements.

Applications

• GPS devices: Provides accurate time information for location tracking and synchronization.
• Digital signage: Used for scheduling content playback and displaying accurate time.
• Access control systems: Ensures accurate time-stamping of events and access logs.
• Industrial automation: Integrated for precise time-based control and data logging.
• Point-of-sale (POS) systems: Provides accurate time for transaction recording and reporting.

Features

• Integrated 32.768 kHz crystal oscillator: Provides a stable and accurate time base.
• I2C interface: Enables easy communication with microcontrollers and other system components.
• Low power consumption: Maximizes battery life in portable applications.
• Compact package: Allows for integration into small and space-constrained devices.
• Wide operating voltage range: Offers flexibility in system design.
• Backup battery switchover: Automatically switches to a backup battery during main power failure.
• Alarm function: Can be programmed to generate interrupts at specific times or dates.
• Timer function: Provides a programmable timer for various timing applications.

Benefits

• Accurate timekeeping: Provides reliable and precise time and date information.
• Simplified design: Integrates all necessary components for real-time clock functionality.
• Extended battery life: Low power consumption maximizes battery life in portable devices.
• Easy integration: Simple I2C interface allows for easy connection to microcontrollers.
• Improved system reliability: Backup battery switchover ensures continuous operation during power outages.

Additional Details

The RX-8803SA UB-L2 typically operates with a supply voltage within the range of 1.6V to 5.5V. It communicates via the I2C serial protocol. The module is available in surface-mount packages. The operating temperature usually spans from -40°C to +85°C. The accuracy depends on the crystal oscillator and temperature, and may include temperature compensation. Data is stored in registers that can be accessed through the I2C interface, enabling reading and writing of time and date information, as well as configuring alarms and timers. The backup battery switchover ensures that the clock keeps running when the main power is off, preventing loss of time and date data.