RX-8581SA:B:PURE SN

Real Time Clock Overview

The RX-8581SA:B:PURE SN is a Real Time Clock (RTC) integrated circuit manufactured by Epson Timing. It operates within a supply voltage range of 1.6 V to 5.5 V and supports an I2C bus interface for data communication. The device provides date and time information in YY-MM-DD-dd and HH:MM:SS formats, respectively, with a 16-byte storage capacity. It functions reliably across a temperature range of -40°C to +85°C. This component is part of the RX-8581 series designed for precise timekeeping applications requiring low power consumption and standard serial connectivity.

Real Time Clock Feature Summary

• I2C bus interface for digital communication
• Supply voltage range of 1.6 V to 5.5 V
• 16-byte RAM storage capacity
• Operating temperature range from -40°C to +85°C

Real Time Clock Applications

• General purpose real-time clocking in embedded systems
• Data logging devices requiring timestamp accuracy
• Consumer electronics with timekeeping features

Real Time Clock Part Context

This component belongs to the Epson RX-8581 series of Real Time Clocks. The series includes variants such as RX-8581NB:B0, which shares similar electrical characteristics but may differ in packaging or specific pin configurations. The RX-8581SA variant utilizes a specific package type suitable for surface mount assembly, distinguishing it from other series members like the RX-8571 family.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and software register maps when considering alternative RTC ICs from different manufacturers or Epson's other product lines.