RX8900CEUC0

Real Time Clock Overview

The RX8900CEUC0 is a Real Time Clock (RTC) module manufactured by Epson Timing, belonging to the RX8900CE series. It integrates an I2C bus interface for communication and provides clock/calendar functions with date formats including YY-MM-DD-dd and time formats in HH:MM:SS (24-hour). The device operates within a supply voltage range of 2.5V to 5.5V and supports battery backup voltages from 1.6V to 5.5V. It features a maximum current consumption of 1.4µA to 1.5µA at 3V to 5V during timing operations. The component is housed in a 10-pin surface-mount package with dimensions of 3.2mm x 2.5mm and is rated for operation between -30°C and +70°C.

Real Time Clock Feature Summary

• Integrated DTCXO technology providing ±5.0ppm frequency stability within the -30°C to +70°C operating range.
• Compact 10-SMD (3.2x2.5mm) package design suitable for space-constrained applications.
• Low power consumption with standby current of approximately 1.4µA to 1.5µA at 3V-5V.
• Supports I2C bus interface for efficient data transfer and system integration.

Real Time Clock Applications

• Portable electronic devices requiring extended battery life.
• Smart wearable technology with limited board space.
• Low-power sensor networks and IoT modules.
• Consumer electronics needing precise calendar and timekeeping functions.

Real Time Clock Procurement Notes

Verify the specific suffix UC0 against the official Epson RX8900 datasheet to confirm the temperature range (-30°C to +70°C) and accuracy specifications. Ensure compatibility with the target PCB footprint for the 10-SMD package. Check for RoHS compliance status as per the latest manufacturer documentation before finalizing procurement.

Real Time Clock Selection Notes

Select the RX8900CEUC0 when a balance between ultra-small form factor and high precision is required. The UC suffix indicates suitability for commercial temperature ranges (-30°C to +70°C), whereas UA or UB variants are necessary for industrial ranges (-40°C to +85°C). Consider the integrated crystal feature to eliminate external oscillator components and simplify layout.

Real Time Clock Part Context

The RX8900CEUC0 is part of the broader RX8900 family of real-time clock modules designed by Epson Timing. This series distinguishes itself by integrating the crystal unit and digital temperature compensation circuitry directly into the package, reducing the need for external discrete components. It serves as a drop-in replacement for traditional RTC ICs that require separate crystals and load capacitors.

Real Time Clock Replacement Considerations

Direct pin-to-pin replacements within the same package may include other RX8900CE variants such as RX8900CEUB3 for wider temperature ranges. Verify electrical parameters and software register compatibility when substituting with different suffixes or competing RTC solutions.