RX4901CE XB B03

Real Time Clock Overview

The RX4901CE XB B03 is a Real-Time Clock (RTC) module 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 component provides high stability with an accuracy of ±5 ppm across the industrial temperature range of -40°C to +85°C. It utilizes a 10-SMD, no-lead package measuring 3.2 mm x 2.5 mm. The device supports date formats including YY-MM-DD-dd and time formats such as HH:MM:SS in 24-hour mode.

Real Time Clock Feature Summary

• 3-Wire SPI Bus Interface
• ±5 PPM Accuracy (-40°C to +85°C)
• 1.6 V to 5.5 V Supply Voltage
• 10-SMD No-Lead Package (3.2x2.5 mm)

Real Time Clock Applications

• Industrial control systems requiring precise timing
• Data logging equipment
• Embedded devices with limited power budgets

Real Time Clock Procurement Notes

Verify the specific suffix 'B03' against official Epson documentation to confirm exact calibration and packaging details. Distributor listings may vary in stock availability and lead times. Ensure compatibility with existing 3-wire SPI designs before procurement.

Real Time Clock Selection Notes

Select this model for applications requiring moderate stability (±5 ppm) over a wide temperature range. Compare with the XS variant if higher precision (±3 ppm) is required. Confirm that the host system supports the 3-wire SPI protocol rather than I2C or 4-wire SPI.

Real Time Clock Part Context

This part belongs to the RX4901CE series of RTC modules from Epson Timing. The series offers various interface options and stability grades, designated by suffixes such as XB for 3-wire SPI with ±5 ppm stability. These modules are designed for surface-mount assembly in compact electronic devices.

Real Time Clock Replacement Considerations

Direct replacements include other RX4901CE variants like the XS series for higher accuracy or different interface configurations. Verify pinout and software register compatibility when substituting with other RTC ICs.