RX8010SJ:BB PURE SN

Real Time Clock Overview

The EPSON RX8010SJ:BB PURE SN is a real-time clock (RTC) module manufactured by Epson. It integrates a temperature-compensated crystal oscillator, eliminating the need for external crystals. The device provides high-precision timekeeping with an accuracy of ±5ppm over the industrial temperature range (-40°C to +85°C). It operates on a single supply voltage ranging from 1.6V to 5.5V and communicates via a standard I²C bus interface supporting up to 400kHz. Key features include low power consumption in backup mode, multiple interrupt outputs, and a programmable periodic timer.

Real Time Clock Feature Summary

• Integrated temperature-compensated crystal unit for ±5ppm accuracy without external components
• Wide operating voltage range of 1.6V to 5.5V with automatic VDD/VBAT switching
• I²C interface compatible with standard modes up to 400kHz
• Programmable periodic timer and alarm functions with interrupt outputs

Real Time Clock Applications

• Portable battery-powered devices requiring precise long-term timekeeping
• Smart meters and utility measurement instruments
• Industrial control systems and IoT sensors
• Home appliances with timing functions

Real Time Clock Procurement Notes

Verify the specific suffix 'BB' against official Epson documentation to confirm exact packaging, tape-and-reel specifications, or regional compliance variations. Ensure compatibility with target I²C voltage levels and check for any specific handling requirements associated with the pure tin lead-free finish.

Real Time Clock Selection Notes

Select this component when design constraints require elimination of external crystals to save PCB space and improve vibration resistance. It is suitable for applications needing ±5ppm stability across -40°C to +85°C. Verify that the host microcontroller supports I²C communication and can handle the BCD-coded data registers used for time and date storage.

Real Time Clock Part Context

The RX8010 series represents Epson's line of integrated RTC modules designed to replace discrete crystal-based solutions. The SJ variant typically denotes the SOP8 package configuration. This model belongs to a family focused on reducing bill-of-materials complexity while maintaining industrial-grade reliability and precision for embedded timing applications.

Real Time Clock Replacement Considerations

Direct pin-to-pin replacements within the same package may include other RX8010 variants with different temperature grades or accuracy specs. Cross-model substitution requires verification of register compatibility and I²C address alignment. Always consult the latest datasheet for electrical parameter tolerances before swapping.