RX-4803SAUBX PURE SN

Real Time Clock Overview

The RX-4803SAUBX PURE SN is a digital Real-Time Clock (RTC) module manufactured by Epson Timing. It belongs to the RX-4803SA series, designed for high stability in demanding environments. The device features an integrated frequency temperature characteristic with a tolerance of ±3.4 ppm across the -40°C to +85°C operating range. It utilizes a 14-SOP surface-mount package and supports SPI serial communication for register configuration and data retrieval.

Real Time Clock Feature Summary

• High-frequency stability with internal digital AD correction for environmental temperature variations
• Integrated 1/100-second precision time register with capture buffer for accurate timekeeping
• Supports external second pulse (1PPS) signal synchronization for precise time alignment
• Includes alarm, timer, calendar, and interrupt functions for system control

Real Time Clock Applications

• Automotive electronics requiring stable timing under wide temperature ranges
• Industrial control systems with long-term continuous operation needs
• Medical devices requiring precise time registration
• Energy and petrochemical equipment monitoring

Real Time Clock Procurement Notes

Verify the specific suffix 'UBX' against official Epson documentation to confirm exact frequency output options and electrical characteristics. Ensure compatibility with the target system's SPI interface voltage levels and pinout requirements. Confirm availability status as distribution channels may vary for specific sub-models within the RX-4803SA family.

Real Time Clock Selection Notes

Select this component when application scenarios demand superior frequency stability compared to standard analog RTCs. The digital correction mechanism makes it suitable for environments with significant thermal fluctuations. Consider the SOP-14 package constraints and SPI interface integration during PCB layout design.

Real Time Clock Part Context

This part is part of the RX-4803SA series, which includes variants like UA, UB, UC, and AA. These modules are engineered to provide stable clock signals for main calculation chips, distinguishing them from traditional analog real-time clocks through internal digital calibration methods.

Real Time Clock FAQ

What is the frequency stability of the RX-4803SA series?

The RX-4803SA series offers a frequency tolerance of ±3.4 ppm within the operating temperature range of -40°C to +85°C.

How does the RX-4803SA achieve high stability?

It uses internal digital AD collection methods to correct frequency changes caused by external environmental temperatures.

What is the time resolution of the internal register?

The module features a 1/100-second precision time register equipped with a capture buffer.