RX4901CE XS B03

Real Time Clock Overview

The RX4901CE XS B03 is a Real Time Clock (RTC) from the Epson Timing RX4901CE series. It features a 4-wire SPI bus interface and provides high stability with a frequency tolerance of ±3 ppm across an operating temperature range of -40°C to +85°C. The device includes a 4-frequency output pin configuration. It is designed for surface mount applications, typically supplied in tape and reel packaging.

Real Time Clock Feature Summary

• High stability accuracy of ±3 ppm (-40°C to +85°C)
• 4-wire SPI bus interface
• 4-frequency output pin configuration

Real Time Clock Applications

• Data logging systems requiring precise timekeeping
• Industrial equipment with wide temperature requirements
• Communication infrastructure devices

Real Time Clock Procurement Notes

Verify the specific suffix 'B03' against official Epson documentation, as standard listings often cite 'XS C00' or 'XS B00'. Confirm availability status directly with authorized distributors, as supply constraints may apply to this specific variant.

Real Time Clock Selection Notes

Select this component when a 4-wire SPI interface is required instead of I2C. Ensure the design accommodates the ±3 ppm stability specification and the -40°C to +85°C operating temperature range. Verify voltage compatibility with the system power rails.

Real Time Clock Part Context

This part belongs to the RX4901CE family, which offers various interface options including 3-wire and 4-wire SPI. The 'XS' designation indicates the high-stability ±3 ppm grade. Other variants in the series include the XB models with ±5 ppm stability.

Real Time Clock Replacement Considerations

Direct substitutes within the same series include RX4901CE XS C00 and RX4901CE XS B00, provided the specific suffix does not alter electrical characteristics. Cross-reference with RX8901CE if I2C interface is acceptable.