RX4901CE XS A00

Real Time Clock Overview

The Epson RX4901CE XS A00 is a Real-Time Clock (RTC) IC belonging to the RX4901CE series. It provides clock/calendar functions with an I2C bus interface, supporting date formats of YY-MM-DD and time formats of HH:MM:SS (24-hour). The device operates within a supply voltage range of 1.6 V to 5.5 V and features battery backup switching capabilities. It includes 256 bytes of RAM storage and supports alarm functions. The component is designed for surface mount installation in a compact package, suitable for applications requiring precise timekeeping across a wide temperature range.

Real Time Clock Feature Summary

• I2C Bus Interface for serial communication
• Supply Voltage Range: 1.6 V to 5.5 V
• Operating Temperature: -40°C to +105°C
• 256 Bytes RAM Storage Capacity

Real Time Clock Applications

• Industrial control systems requiring real-time tracking
• Consumer electronics with calendar functionality
• Data logging devices needing timestamp precision

Real Time Clock Procurement Notes

Verify the specific suffix 'A00' against official Epson documentation to confirm pinout and electrical characteristics, as suffixes often denote packaging or tape-and-reel variations. Ensure compatibility with the target system's I2C voltage levels given the 1.6V to 5.5V operating range. Confirm availability through authorized distributors, as lead times may vary based on production schedules.

Real Time Clock Selection Notes

Select this RTC when an I2C interface is preferred over SPI for timekeeping tasks. The wide voltage range (1.6V–5.5V) allows flexibility in power supply design. The industrial temperature range (-40°C to +105°C) makes it suitable for harsh environments. Consider the 256-byte RAM capacity for data storage needs alongside timekeeping functions.

Real Time Clock Part Context

The RX4901CE series represents Epson's line of high-precision real-time clocks. These ICs are designed to offer low power consumption and high accuracy, often utilizing external crystals for timing stability. The series supports both I2C and SPI interfaces in different variants, catering to diverse embedded system requirements.

Real Time Clock Replacement Considerations

Check for direct substitutes within the RX4901CE family with compatible suffixes. Verify if other manufacturers offer I2C RTCs with similar voltage ranges and temperature specifications, ensuring pin-to-pin compatibility if a drop-in replacement is required.