RX8901CE XS B06

Real Time Clock Overview

The RX8901CE XS B06 is a Real-Time Clock (RTC) IC manufactured by Epson Timing. It features an I2C bus interface and operates within a supply voltage range of 1.6V to 5.5V. The device maintains time in HH:MM:SS format and date in YY-MM-DD format. It exhibits a frequency tolerance of +/-3.0ppm from -40°C to +85°C, extending to +/-5.0ppm from 85°C to +105°C. The unit consumes a maximum current of 1.5µA at 3V. It is housed in a 10-SMD, no-lead package with dimensions of 3.2x2.5mm.

Real Time Clock Feature Summary

• I2C bus interface for digital communication
• High accuracy frequency tolerance of +/-3.0ppm (-40°C to +85°C)
• Low power consumption of 1.5µA @ 3V
• Integrated alarm function

Real Time Clock Applications

• Portable electronic devices requiring precise timekeeping
• Industrial equipment operating in extended temperature ranges
• Data logging systems needing calendar and clock functions

Real Time Clock Procurement Notes

Verify the specific suffix 'XS B06' against official Epson documentation to confirm pin configuration and packaging quantity. The 'B0' designation indicates Pin 4 is configured as EVIN3. Confirm the reel quantity is 2,000 units. Ensure compatibility with the target system's I2C voltage levels given the 1.6V to 5.5V operating range.

Real Time Clock Selection Notes

Select this component when high precision (+/-3.0ppm) is required over a wide temperature range. The 10-SMD package suits space-constrained designs. Compare against the XB variant if lower cost is prioritized over higher accuracy. Verify that the EVIN3 function on Pin 4 meets the external input requirements of the application design.

Real Time Clock Part Context

This part belongs to the RX8901CE series of real-time clocks. It shares the same physical footprint and core functionality with other variants like RX8901CE XS A06, differing primarily in the Pin 4 configuration (EVIN3 vs FOUT) and potentially internal calibration settings defined by the suffix codes.

Real Time Clock Replacement Considerations

Direct replacements include other RX8901CE variants such as RX8901CE XS A06 or RX8901CE XB B06, provided the Pin 4 function difference (FOUT vs EVIN3) is acceptable for the circuit design. Cross-model substitution with RX4901CE requires SPI/I2C interface verification.