RX4901CE XB B00

Real Time Clock Overview

The RX4901CE XB B00 is a Real-Time Clock (RTC) manufactured by Epson Timing. It features a 3-wire SPI bus interface and operates within a supply voltage range of 1.6 V to 5.5 V. The device maintains a high stability accuracy of ±5 ppm across an operating temperature range of -40°C to +85°C. It supports date formats including YY-MM-DD-dd and time formats in both 12-hour and 24-hour configurations. The component is housed in a compact surface-mount package with dimensions of 3.2 mm x 2.5 mm and a maximum thickness of 1.0 mm.

Real Time Clock Feature Summary

• 3-wire SPI bus interface for data communication
• High stability accuracy of ±5 ppm at -40°C to +85°C
• Wide operating voltage range from 1.6 V to 5.5 V
• Compact 3.2 mm x 2.5 mm SMD package

Real Time Clock Applications

• Industrial control systems requiring precise timekeeping
• Consumer electronics with limited space constraints
• Automotive embedded systems operating in wide temperature ranges

Real Time Clock Procurement Notes

Verify the specific suffix 'XB B00' against official Epson documentation to confirm pinout, packaging quantity, and environmental compliance status. Ensure the design accommodates the 3-wire SPI interface requirements and the specified voltage levels. Check for any RoHS or REACH compliance certificates relevant to the manufacturing batch.

Real Time Clock Selection Notes

Select this component when a low-profile RTC with SPI connectivity is required. The ±5 ppm stability is suitable for applications not needing crystal oscillator trimming. Confirm that the system power supply remains within the 1.6 V to 5.5 V range during all operational states to ensure correct functionality.

Real Time Clock Part Context

This part belongs to the RX4901CE series of real-time clocks from Epson Timing. The series includes variants with different stability ratings, such as the XS version which offers ±3 ppm accuracy. The XB variant specifically targets applications requiring ±5 ppm stability over the industrial temperature range.

Real Time Clock Replacement Considerations

Direct replacements may include other RX4901CE variants with compatible interfaces. Verify pin compatibility and software register maps before substituting. Cross-model comparisons should focus on the specific SPI protocol implementation and voltage tolerances.