RTC-4543SA:B0:PURE SN

Real Time Clock Overview

The RTC-4543SA:B0:PURE SN is a real-time clock module manufactured by Epson. It features a built-in frequency-adjusted 32.768 kHz crystal unit and operates within a voltage range of 2.5 V to 5.5 V. The device utilizes a 3-wire serial interface and is housed in a 14-SOIC package with a width of 5.00 mm. It supports an operating temperature range of -40°C to 85°C and maintains timekeeping current between 1 µA and 3 µA at 2 V to 5 V.

Real Time Clock Feature Summary

• Integrates a built-in frequency-adjusted 32.768 kHz crystal unit for precise timing.
• Supports wide operating voltage from 2.5 V to 5.5 V for flexible power supply options.
• Utilizes a 3-wire serial interface for efficient data communication.
• Designed for reliable operation across industrial temperature ranges.

Real Time Clock Applications

• Real-time clock and calendar systems
• Industrial control equipment requiring precise timekeeping
• Consumer electronics with low-power requirements

Real Time Clock Procurement Notes

Verify the specific suffix B0 against official Epson documentation to confirm pinout and electrical characteristics, as variations may exist. Ensure compatibility with the target system's voltage levels and serial interface protocols before integration. Check for end-of-life status or alternative sourcing options if long-term availability is required.

Real Time Clock Selection Notes

Select this component when a compact, low-power real-time clock with integrated crystal is needed. The 3-wire serial interface reduces pin count compared to parallel interfaces. Consider the 2.5 V to 5.5 V operating range for systems with varying supply voltages. Verify thermal performance within the specified -40°C to 85°C range for the intended environment.

Real Time Clock Part Context

This part belongs to Epson's RTC-4543 series of real-time clock modules. These modules are designed to provide accurate timekeeping functions in embedded systems. The SA variant typically denotes specific packaging and interface configurations. The PURE SN suffix indicates lead-free composition and specific manufacturing standards.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Epson's official documentation for potential cross-reference recommendations or updated product line alternatives.