RTC-8564NB:B3 ROHS

Real Time Clock Overview

The EPSON RTC-8564NB:B3 ROHS is a Real-Time Clock (RTC) IC designed for precise timekeeping in embedded systems. It features an I2C serial interface and supports date formats including YY-MM-DD-dd. The device operates within a supply voltage range of 1.1V to 5.5V, with typical standby power consumption of 0.25μA at 3.0V. It includes temperature compensation for stability across -40°C to +85°C. Key electrical parameters include a running current of 1.2μA @ 3.0V during I2C communication.

Real Time Clock Feature Summary

• Integrated Temperature Compensated Oscillator (TCXO) for ±20 ppm accuracy
• I2C Serial Interface with programmable alarm and timer interrupts
• Automatic backup power switching via /VDD pin when VDD drops below 1.1V
• Low standby power consumption of 0.25μA at 3.0V

Real Time Clock Applications

• Industrial control systems requiring long-term time stability
• Smart meters and data loggers
• Medical devices with battery-powered operation
• Embedded systems utilizing deep sleep modes for energy efficiency

Real Time Clock Procurement Notes

Verify the specific suffix B3 against the manufacturer's latest datasheet to confirm package type and RoHS compliance status. Ensure the ordering part number matches the exact revision required for your design, as suffixes may indicate variations in packaging or material composition that do not alter functional performance.

Real Time Clock Selection Notes

Select this component when high accuracy over wide temperature ranges is critical. The integrated TCXO eliminates the need for external compensation circuits. Verify that the host MCU supports the required I2C speed and that the system architecture can utilize the low-power wake-up features effectively.

Real Time Clock Part Context

This part belongs to the Epson RTC-8564 series, which are widely used in applications demanding reliable timekeeping without frequent calibration. The NB variant typically denotes a specific package configuration, often SOIC, suitable for surface mount assembly in compact electronic designs.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official documentation for cross-reference information or recommended alternatives if this specific part number becomes unavailable.