RX-4803SA:UB3 PURE SN

Real Time Clock Overview

The RX-4803SA:UB3 PURE SN is a Real-Time Clock (RTC) module manufactured by Epson Timing. It utilizes an SPI bus interface for communication and features a SOP-14 surface-mount package. The device operates within a supply voltage range of 1.6 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. It provides date formats in YY-MM-DD-dd and time formats in HH:MM:SS with 12-hour or 24-hour options. The component offers high frequency stability, achieving a tolerance of ±3.4 PPM across the industrial temperature range.

Real Time Clock Feature Summary

• High frequency stability performance suitable for demanding environments
• Integrated 1/100-second precision time register with capture buffer
• Supports external second pulse synchronization for GPS applications

Real Time Clock Applications

• Automotive electronics systems requiring precise timing
• Industrial control equipment operating in wide temperature ranges
• Medical devices needing stable clock signals
• Energy and petrochemical monitoring systems

Real Time Clock Procurement Notes

Verify the specific suffix 'UB3' against official Epson documentation to confirm pinout and electrical characteristics match your design requirements. Confirm current availability status as distribution channels may report limited stock or discontinuation notices. Ensure compatibility with your system's SPI protocol implementation before finalizing procurement decisions.

Real Time Clock Selection Notes

Select this component when application demands exceed standard RTC accuracy specifications. The ±3.4 PPM stability over -40°C to +85°C makes it suitable for automotive and industrial sectors. Consider the SOP-14 package constraints and SPI interface requirements during PCB layout. Evaluate if the integrated 1/100s timer functionality justifies the selection over simpler alternatives.

Real Time Clock Part Context

This part belongs to the RX-4803SA series of digital real-time clock modules designed by Epson Timing. These modules are engineered to provide stable clock signals to main calculation chips via internal digital AD collection methods that correct for environmental temperature variations. The series targets applications where frequency stability is critical under varying load conditions.

Real Time Clock Replacement Considerations

Check for updated sub-models within the RX-4803SA family such as UA or UC variants which may offer different stability profiles. Verify if newer generation Epson RTCs maintain the same SOP-14 footprint and SPI interface while offering improved availability or extended temperature ranges.