RX-8803SA:UC3 PURE SN

Real Time Clock Overview

The RX-8803SA:UC3 PURE SN is a Real Time Clock (RTC) IC manufactured by Epson Timing. It features an I2C bus interface for communication and supports date formats including YY-MM-DD-dd and time formats such as HH:MM:SS in 24-hour mode. The device operates within a supply voltage range of 2.5V to 5.5V, with battery backup support from 1.6V to 5.5V. It is housed in a 14-SOP package and functions at temperatures between -40°C and +85°C. The maximum current consumption during timing is specified as 1.4µA to 1.5µA at 3V to 5V.

Real Time Clock Feature Summary

• I2C bus interface for clock/calendar data access
• Supports HH:MM:SS (24-hour) and YY-MM-DD-dd formats
• Low power consumption: 1.4µA ~ 1.5µa @ 3V ~ 5V
• Wide operating temperature range: -40°C to +85°C

Real Time Clock Applications

• General-purpose real-time clocking in embedded systems
• Data logging applications requiring precise timekeeping
• Industrial equipment monitoring and control

Real Time Clock Procurement Notes

Verify the exact suffix 'UC3' against official Epson documentation, as standard listings often reference 'UC'. Confirm availability status, as some variants may be discontinued or have limited stock. Ensure compatibility with existing PCB footprints for the 14-SOP package before procurement.

Real Time Clock Selection Notes

Select this component when an I2C-compatible RTC with low power consumption is required. Ensure the system voltage aligns with the 2.5V-5.5V supply range. Consider the 14-SOP package size for board space constraints. Verify if the specific 'UC3' suffix offers distinct electrical characteristics compared to other suffixes in the RX-8803SA series.

Real Time Clock Part Context

This part belongs to the Epson RX-8803SA series of Real Time Clocks. It shares core functionalities with similar models like the RX-8803SA:UC but may differ in packaging or specific electrical tolerances defined by the suffix. It is designed for applications needing accurate timekeeping with minimal power draw.

Real Time Clock Replacement Considerations

Direct substitutes include other RX-8803SA variants with compatible pinouts. Check datasheets for equivalent I2C addresses and register maps. Models like RX-8900SA offer similar interfaces but may require firmware adjustments due to different feature sets.