RX-4803LC:UA PURE SN

Real Time Clock Overview

The RX-4803LC:UA PURE SN is a digital real-time clock (RTC) module manufactured by Epson Timing. It provides stable clock signals to main computing chips via internal digital AD collection for environmental temperature frequency correction. The device features a ±3.4 PPM frequency tolerance within the -40°C to +85°C operating range. It includes a time register with 1/100-second precision and supports synchronization with external second pulse signals. The component utilizes serial communication for register configuration and interrupt operations, housed in an SOP-14 package.

Real Time Clock Feature Summary

• Digital RTC module with internal temperature compensation for high stability
• Frequency tolerance of ±3.4 × 10^-6 across -40°C to +85°C
• Integrated 1/100-second precision time register with capture buffer
• Supports external second pulse (1PPS) signal synchronization

Real Time Clock Applications

• Industrial control systems requiring precise timing
• Medical devices demanding stable clock signals
• Automotive electronics operating in wide temperature ranges
• GPS signal synchronization applications

Real Time Clock Procurement Notes

Verify the specific suffix 'PURE SN' against official Epson documentation to confirm compliance details and packaging specifications. Confirm availability status as distribution may be restricted in certain regions. Ensure the ordering part number matches the exact electrical characteristics required for the target application environment.

Real Time Clock Selection Notes

Select this model when extreme frequency stability is critical under varying thermal conditions. The ±3.4 PPM tolerance makes it suitable for harsh environments compared to standard oscillators. Consider the SOP-14 package constraints and serial interface requirements during PCB layout design. Validate that the 1/100-second resolution meets the system's timing accuracy needs.

Real Time Clock Part Context

This component belongs to the RX-4803SA series of digital real-time clock modules. The UA sub-model specifically denotes the variant optimized for maximum frequency stability. It distinguishes itself from analog RTCs by using digital calibration methods to mitigate environmental frequency drift, ensuring reliable operation in automotive and industrial sectors.

Real Time Clock Replacement Considerations

Direct substitutes within the RX-4803SA family include variants with different frequency tolerances or output frequencies. Verify pin compatibility and software register definitions before replacing with other sub-models such as UB, UC, or AA. Cross-reference datasheets to ensure the replacement maintains the required ±3.4 PPM stability specification.