RX-4575LC:B3

Real Time Clock Overview

The Epson RX-4575LC:B3 is a real-time clock module featuring a built-in frequency-adjusted 32.768 kHz crystal unit and a 3-wire serial interface. It operates within a voltage range of 1.6 V to 5.5 V, with a wide timekeeper voltage range of 1.3 V to 5.5 V. The device provides low backup current consumption of 0.35 µA at 3 V. Key features include external event detection with chattering-free input ports, a 12-bit timer, alarm functions, and full calendar capabilities. It utilizes a VSOJ-12 package.

Real Time Clock Feature Summary

• Built-in 32.768 kHz crystal unit requiring no frequency adjustment
• External event detection with selectable chattering filters (8 ms, 31 ms, 62 ms, 125 ms)
• Low backup current consumption of 0.35 µA (typical) at 3 V
• Integrated 12-bit timer and alarm function

Real Time Clock Applications

• Car multimedia systems
• Body electronics
• Remote keyless entry systems
• Engine control units
• Airbag systems

Real Time Clock Procurement Notes

Verify the specific ordering suffix B3 against official documentation to confirm exact packaging or variant specifications. Ensure compliance with export control laws if applicable. Confirm that the product meets ISO 9001 and ISO/TS 16949 standards for automotive reliability requirements.

Real Time Clock Selection Notes

Select this model for applications requiring external event detection and low power consumption. The 3-wire serial interface simplifies connection compared to I2C. Ensure the operating voltage stays within 1.6 V to 5.5 V. Consider the VSOJ-12 package dimensions for PCB layout constraints.

Real Time Clock Part Context

The RX-4575LC belongs to the Epson RX-4575 LC series of real-time clock modules. These modules are designed for general electronic equipment and automotive applications. They integrate the oscillator circuit and crystal unit into a single package to ensure precise timing without external calibration.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet. Consult Epson directly for cross-reference options.