RX-4803LCUA0 PURE SN

Real Time Clock Overview

The RX-4803LCUA0 PURE SN is a Real Time Clock (RTC) IC manufactured by Epson Timing. It provides clock/calendar functionality with a high precision of +/-3.4 PPM across an operating temperature range of -40°C to +85°C. The component utilizes the I2C interface for communication and operates within a supply voltage range of 1.7V to 5.5V. It features a compact surface-mount package, specifically the 12-VSOJ (12-TFSOJ), measuring 2.40mm in width. The device includes built-in EEPROM storage and supports standard time formats including HH:MM:SS and YY-MM-DD-dd.

Real Time Clock Feature Summary

• High accuracy frequency stability of +/-3.4 PPM over the full industrial temperature range (-40°C to +85°C).
• Integrated 80-bit EEPROM for data storage alongside clock/calendar functions.
• Supports I2C serial interface for efficient system integration.
• Wide operating voltage range from 1.7V to 5.5V.

Real Time Clock Applications

• Industrial control systems requiring precise timing under varying thermal conditions.
• Embedded devices needing non-volatile timekeeping with integrated data storage.
• Automotive electronics operating within extended temperature ranges.

Real Time Clock Procurement Notes

Verify availability status as distribution channels may indicate restricted supply or limited stock levels. Confirm the specific suffix 'PURE SN' matches project requirements, as ordering suffixes can denote packaging or material compliance variations without altering core electrical function. Ensure compatibility with existing PCB footprints for the 12-VSOJ package before finalizing procurement orders.

Real Time Clock Selection Notes

Select this component when high frequency accuracy (+/-3.4 PPM) is critical for long-term timekeeping without frequent recalibration. The inclusion of EEPROM makes it suitable for applications storing configuration data alongside time stamps. Verify that the host microcontroller supports the required I2C protocol and that the 1.7V to 5.5V supply range aligns with the system power architecture.

Real Time Clock Part Context

This part belongs to the RX-4803LC series of real-time clocks from Epson Timing. The series is designed for applications demanding high reliability and precision. The 'PURE SN' suffix typically indicates specific environmental compliance or packaging details consistent with manufacturer standards for this product line.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult official Epson resources or authorized distributors for validated cross-references or pin-compatible alternatives if this specific variant becomes unavailable.