RX8804CE XB0

Real Time Clock Overview

The RX8804CE XB0 is a low-power real-time clock (RTC) module from Epson, designed for high accuracy across a wide temperature range of -40°C to +105°C. It integrates a 32.768 kHz DTCXO crystal unit and supports I2C bus communication. The device offers selectable clock outputs at 32.768 kHz, 1024 Hz, or 1 Hz, along with time-stamp functionality capable of recording timestamps from year to second. It features an interrupt output and operates within a voltage range of 1.6V to 5.5V.

Real Time Clock Feature Summary

• Integrates a built-in 32.768 kHz DTCXO crystal unit for enhanced frequency stability
• Provides selectable clock outputs including 32.768 kHz, 1024 Hz, and 1 Hz
• Supports I2C bus interface for efficient data communication
• Includes time-stamp function to record timestamps from year to second

Real Time Clock Applications

• Wireless communication systems requiring stable timing
• Industrial applications operating in harsh environments
• Consumer electronics needing precise clock/calendar functions
• Data logging devices utilizing time-stamp capabilities

Real Time Clock Procurement Notes

Verify the specific suffix XB0 against official Epson documentation to confirm package type and tape/reel configuration. Ensure compatibility with system voltage requirements ranging from 1.6V to 5.5V. Cross-reference the I2C address settings if multiple RTCs are used on the same bus. Confirm that the integrated DTCXO meets the phase noise and jitter specifications required by the target application.

Real Time Clock Selection Notes

Select this component when high accuracy over a wide temperature range (-40°C to +105°C) is critical. The integrated DTCXO eliminates the need for external oscillator circuits, saving PCB space. Consider the available clock outputs (32.768 kHz, 1024 Hz, 1 Hz) to match peripheral clocking needs. The I2C interface simplifies integration with microcontrollers compared to parallel interfaces.

Real Time Clock Part Context

The RX8804 series represents Epson's low-power real-time clock solutions designed for reliability in demanding conditions. This model specifically incorporates a Digital Temperature Compensated Crystal Oscillator (DTCXO) to maintain precision without external components. It is part of a broader lineup of timing modules aimed at reducing design complexity for industrial and consumer applications.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Epson's official Product Configuration Guide for potential alternatives within the RX8804 family or other compatible RTC modules.