RX-4803SA:UAB PURE SN

Real Time Clock Overview

The RX-4803SA:UAB PURE SN is a digital real-time clock (RTC) module manufactured by Epson Timing. It features an SPI bus interface and operates within a supply voltage range of 1.6 V to 5.5 V. The device supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS:hh in both 12-hour and 24-hour modes. It is housed in a 14-pin SOP package with surface mount installation. The module functions across a temperature range of -40°C to +85°C and includes battery backup switching capabilities.

Real Time Clock Feature Summary

• SPI serial communication interface for register configuration and data retrieval
• High stability frequency tolerance of ±3.4 ppm across the industrial temperature range (-40°C to +85°C)
• Integrated 1/100-second precision time register with capture buffer for external synchronization

Real Time Clock Applications

• Automotive electronic control systems requiring high frequency stability
• Industrial control equipment operating in wide temperature environments
• Medical devices needing precise timekeeping and synchronization

Real Time Clock Procurement Notes

Verify the specific suffix 'UAB' against official Epson documentation, as standard listings often reference UA, UB, UC, or AA variants. Confirm availability status through authorized distributors, as some regional channels may report restricted sales. Ensure the selected packaging matches production requirements, typically reel-based for this series.

Real Time Clock Selection Notes

Select this component when SPI connectivity is required instead of I2C. The UAB suffix indicates specific electrical or mechanical characteristics; verify these against the datasheet to ensure compatibility with the target system's power supply and signal levels. Consider the ±3.4 ppm stability requirement for applications sensitive to environmental temperature fluctuations.

Real Time Clock Part Context

This part belongs to the RX-4803SA series of digital RTC modules designed for high-stability applications. The series utilizes internal digital AD conversion to correct frequency variations caused by ambient temperature changes, offering superior performance compared to analog RTCs in harsh environments.

Real Time Clock Replacement Considerations

Direct replacements must match the SPI interface and SOP-14 footprint. Verify if alternative suffixes like UA or UB offer identical pinouts and electrical specifications. Cross-reference with the RX-8900SA series only if I2C interface adaptation is feasible.