RX-8803SAUA0 PURE SN

Real Time Clock Overview

The RX-8803SAUA0 PURE SN is a Real-Time Clock (RTC) module manufactured by Epson Timing. It features an SPI bus interface for data communication and supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS:hh in both 12-hour and 24-hour modes. The device operates within a supply voltage range of 1.6 V to 5.5 V and functions reliably across a temperature range of -40°C to +85°C. It is housed in a SOP-14 surface-mount package and does not include a battery backup switching feature.

Real Time Clock Feature Summary

• SPI bus interface for high-speed data transfer
• Wide operating voltage range from 1.6 V to 5.5 V
• Industrial temperature rating from -40°C to +85°C
• SOP-14 surface-mount packaging

Real Time Clock Applications

• Industrial control systems requiring precise timekeeping
• Consumer electronics with extended temperature requirements
• Data logging devices needing reliable calendar functions

Real Time Clock Procurement Notes

Verify the specific suffix UA0 against official Epson documentation to confirm pinout and electrical characteristics. Confirm availability status as distribution channels may list limited stock or restricted sales regions. Ensure the ordering quantity matches the manufacturer's standard reel size, typically 1000 units per reel for this series.

Real Time Clock Selection Notes

Select this component when an SPI interface is preferred over I2C for RTC connectivity. The SOP-14 package offers a larger footprint compared to VSOJ options, which may simplify PCB layout. Verify that the system power supply remains within the 1.6 V to 5.5 V range during all operational states to ensure correct clock functionality.

Real Time Clock Part Context

This part belongs to the RX-8803SA series of real-time clocks from Epson Timing. It shares core timing capabilities with other models in the family but differs in interface type and package style. The SA designation indicates the SPI interface variant, distinguishing it from the LC or UC series which utilize I2C protocols.

Real Time Clock Replacement Considerations

Direct replacements must match the SPI interface and SOP-14 package. Models like the RX-8803LCUA0 use I2C and are not electrically compatible without circuit redesign. Consult Epson's cross-reference guides for verified alternatives with identical pinouts and specifications.