RX8111CE AB

Real Time Clock Overview

The EPSON RX8111CE AB is a real-time clock (RTC) integrated circuit featuring an I2C bus interface. It provides clock/calendar functions with date formats of YY-MM-DD and time formats of HH:MM:SS. The device operates within a supply voltage range of 1.6V to 5.5V and consumes a maximum current of 3µA at 3V. It is housed in a 10-SMD, no-lead package measuring 3.2x2.5mm. The component supports alarm features and includes internal RAM. It is designed for surface mount installation and functions reliably across a temperature range of -40°C to 85°C.

Real Time Clock Feature Summary

• I2C Bus Interface: Supports standard communication protocols for system integration.
• Low Power Consumption: Maximum current draw of 3µA at 3V supply voltage.
• Wide Operating Voltage: Functional supply range from 1.6V to 5.5V.
• Compact Package: Available in a 10-SMD, no-lead footprint (3.2x2.5mm).

Real Time Clock Applications

• Embedded systems requiring precise timekeeping
• Portable electronic devices with battery backup needs
• Industrial control equipment operating in wide temperature ranges

Real Time Clock Procurement Notes

Verify the specific ordering suffix against official Epson documentation to ensure correct packaging and specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Check for any product change notifications that may affect pinout or electrical characteristics.

Real Time Clock Selection Notes

Select this model when an I2C interface is required rather than SPI alternatives like the RX4111CE. Ensure the design accommodates the 10-SMD package dimensions. Verify that the system voltage remains within the 1.6V to 5.5V operational window for consistent performance.

Real Time Clock Part Context

This part belongs to the RX8111CE series of real-time clocks manufactured by Epson Timing. It is distinct from the RX4111CE series, which utilizes an SPI interface instead of I2C. Both series share similar power consumption profiles and package types but differ in communication protocol.

Real Time Clock Replacement Considerations

Direct functional substitutes include other I2C RTCs with similar voltage and current specifications. For SPI-based designs, the RX4111CE series offers comparable timing accuracy and power efficiency but requires different software drivers.