RX-8803SA:UC PURE SN

Real Time Clock Overview

The RX-8803SA:UC PURE SN is a Real-Time Clock (RTC) IC manufactured by Epson Timing. It features an I2C bus interface and operates within a supply voltage range of 2.5V to 5.5V, with battery backup support from 1.6V to 5.5V. The device maintains time accuracy with a frequency tolerance of ±5.0 ppm over an operating temperature range of -30°C to +70°C. It utilizes a 14-SOP package and includes internal components such as a calibrated crystal and DTCXO technology for high stability. The part is currently listed as discontinued.

Real Time Clock Feature Summary

• Integrated Digital Temperature Compensated Crystal Oscillator (DTCXO) for high precision
• I2C bus interface for communication
• Frequency accuracy of ±5.0 ppm at -30°C to +70°C
• Low current consumption during timer operation

Real Time Clock Applications

• Equipment exposed to harsh environmental temperatures
• Outdoor systems requiring stable timekeeping
• Vehicle-mounted devices

Real Time Clock Procurement Notes

This component is officially designated as End-of-Life (EOL) by the manufacturer. Distribution availability is restricted or unavailable through standard channels. Verification of final stock levels and alternative sourcing strategies should be conducted directly with authorized distributors or via official discontinuation notices prior to procurement planning.

Real Time Clock Selection Notes

Select this model only if the specific ±5.0 ppm accuracy at -30°C to +70°C meets system requirements. Note that the UC suffix denotes this specific temperature and accuracy profile. Due to its discontinued status, design-in activities should consider long-term supply risks and potential need for redesign using active series members.

Real Time Clock Part Context

The RX-8803SA series belongs to Epson's lineup of high-precision RTCs utilizing DTCXO technology. This series distinguishes itself by integrating a calibrated 32.768kHz crystal unit and digital frequency compensation, offering superior stability compared to standard RTC modules without external compensation circuits.

Real Time Clock Replacement Considerations

As this part is discontinued, verify active equivalents within the RX-8900SA series or other Epson RTC families. Cross-referencing pinouts and electrical specifications with current datasheets is essential for any substitution.