RTC-8564JEBX ROHS

Real Time Clock Overview

The Epson RTC-8564JEBX ROHS is a Real-Time Clock (RTC) IC belonging to the RTC-8564 series, designed for precise timekeeping and calendar functions. It features an I2C serial interface for communication with host microcontrollers. The device integrates a 32.768kHz crystal oscillator, eliminating the need for external frequency adjustment components. Key electrical specifications include a supply voltage range of 1.8V to 5.5V and a maximum timing current of 0.65µA at 2V and 0.8µA at 5V. It operates within a temperature range of -40°C to +85°C and is housed in a 12-VSOJ package.

Real Time Clock Feature Summary

• Integrated 32.768kHz crystal oscillator requiring no external frequency tuning
• I2C bus interface compatible with standard (100kHz) and fast mode (400kHz)
• Low power consumption with typical standby current of 0.25µA at 3.0V
• Supports leap year calculation and programmable alarm/timer interrupts

Real Time Clock Applications

• Industrial control systems requiring high reliability
• Smart meters and data loggers
• Medical devices with battery-powered constraints
• Embedded systems needing accurate time-stamping

Real Time Clock Procurement Notes

Verify the specific suffix 'BX' against official Epson documentation to confirm pinout compatibility and RoHS compliance status. Check for End-of-Life (EOL) notices as related variants like RX-8564LC:B3 have been discontinued. Confirm package availability in bulk or cut tape formats suitable for surface mount assembly.

Real Time Clock Selection Notes

Select this component when a compact I2C-based RTC with integrated crystal is required for space-constrained designs. Ensure the host system supports I2C communication at the desired clock speed. Verify that the operating voltage range of 1.8V–5.5V aligns with the target system's power supply rails. Consider the 12-VSOJ package dimensions for PCB layout constraints.

Real Time Clock Part Context

This part belongs to the Epson RTC-8564 family, which includes variants such as RTC-8564NB and RX-8564LC. These models share core functionality but differ in package types (e.g., SON-22, VSOJ-12) and minor electrical characteristics. The J-series typically denotes specific packaging or regional compliance variations within the broader product line.

Real Time Clock Replacement Considerations

Direct replacements may include other Epson RTC-8564 variants with compatible packages. Cross-brand alternatives like DS1307 or PCF8563 require significant firmware and hardware redesign due to differences in register maps and integration levels.