The RX-8803SA UB is a real-time clock (RTC) module manufactured by Epson. This module is designed to provide accurate and reliable timekeeping in a wide range of applications. It features an integrated 32.768 kHz crystal oscillator and a serial interface for easy communication with microcontrollers and other devices. The 'UB' suffix likely designates a specific packaging or feature variant.

Applications

• Smartwatches and wearables: Provides accurate time and date information in wearable devices.
• Portable navigation devices: Tracks time and date for accurate location data.
• Industrial control systems: Used for time-stamping events and scheduling tasks.
• Metering equipment: Accurately records time for energy consumption and billing.
• Medical devices: Provides precise timekeeping for monitoring and data logging.

Features

• Integrated 32.768 kHz crystal oscillator: Ensures accurate timekeeping.
• I2C interface: Allows for easy communication with a host microcontroller.
• Low power consumption: Optimizes battery life in portable applications.
• Small package size: Enables integration into compact devices.
• Wide operating voltage range: Provides flexibility in system design.
• Automatic backup battery switchover: Seamlessly switches to backup power during main power loss.
• Alarm function: Provides programmable alarm features for event triggering.
• Timer function: Includes a programmable timer for a variety of applications.

Benefits

• High accuracy: 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 facilitates easy connection to microcontrollers.
• Enhanced reliability: Backup battery function ensures continuous operation during power outages.

Additional Details

The RX-8803SA UB typically operates with a supply voltage ranging from 1.7V to 5.5V. It utilizes the I2C serial communication protocol for data transfer. This module is available in small surface-mount packages. The operating temperature range is usually between -40°C and +85°C. The device provides temperature compensation to ensure accuracy over a wide temperature range. Data is stored in registers accessible through the I2C interface, allowing for reading and writing time and date, configuring alarms and timers. The automatic battery switchover circuit ensures continued accurate time keeping in the event of main power loss.