RTC-4701JE:B3 ROHS

Real Time Clock Overview

The RTC-4701JE:B3 is a real-time clock (RTC) module manufactured by Epson. It integrates a quartz crystal resonator and an RTC circuit into a single surface-mount package. The device provides accurate timekeeping functions, including seconds, minutes, hours, days, dates, months, and years, with leap-year compensation. It operates via a standard I2C bus interface, allowing for simple communication with host microcontrollers. The module is designed for low power consumption, utilizing a backup battery input to maintain timekeeping during main power loss. Key electrical parameters include an operating voltage range typically from 1.8V to 5.5V for the VCC pin, ensuring compatibility with various logic levels. The frequency of the internal oscillator is derived from a 32.768 kHz external crystal.

Real Time Clock Feature Summary

• Integrated real-time clock functionality with calendar capabilities
• Low power consumption design suitable for battery-backed applications
• Standard I2C bus interface for easy system integration
• Compact surface-mount package for space-constrained designs

Real Time Clock Applications

• Consumer electronics requiring precise timekeeping
• Industrial control systems needing reliable date and time stamps
• Portable devices with limited power budgets
• Automotive infotainment and monitoring systems

Real Time Clock Procurement Notes

Verify the specific suffix B3 corresponds to the required tape-and-reel packaging or lead-free status as per the manufacturer's latest documentation. Confirm that the I2C address matches your system design requirements. Ensure that the backup battery circuitry is correctly implemented to maintain data retention during power outages. Check for any RoHS compliance certificates if environmental regulations apply to your region.

Real Time Clock Selection Notes

Select this component when a compact, low-power RTC solution is needed with I2C connectivity. Consider the operating voltage range to ensure compatibility with the host microcontroller's I/O levels. Evaluate the need for leap-year compensation and the accuracy requirements of the application against the specified drift characteristics. Verify that the physical dimensions fit within the available PCB space.

Real Time Clock Part Context

This part belongs to Epson's family of real-time clock modules designed for general-purpose applications. These modules are known for their high accuracy and reliability in maintaining timekeeping functions over extended periods. The JE designation typically refers to the package type, while the B3 suffix may indicate specific packaging or material composition details defined by the manufacturer.

Real Time Clock Replacement Considerations

Direct replacements should be sought from Epson's current product lineup to ensure pin-to-pin compatibility and identical functionality. Other manufacturers' RTCs may require significant schematic and firmware modifications due to differences in register maps and interface protocols. Always verify electrical specifications and package dimensions before substituting.