RX-4045SA:AA

Real Time Clock Overview

The RX-4045SA:AA is a Real-Time Clock (RTC) integrated circuit manufactured by Epson Timing. It features a serial 4-wire interface and is housed in a 14-pin SOIC package. The device supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS in both 12-hour and 24-hour modes. It operates within a supply voltage range of 1.7 V to 5.5 V and functions across an industrial temperature range of -40°C to +85°C. Key functional attributes include alarm capabilities, calendar tracking, clock timing, timer operations, and leap year compensation.

Real Time Clock Feature Summary

• Integrated RTC functionality with alarm, calendar, clock, and timer capabilities
• Supports leap year compensation for accurate long-term date tracking
• Compatible with serial 4-wire bus interface for system communication

Real Time Clock Applications

• Automotive body electronics systems
• Car multimedia units
• Remote keyless entry systems

Real Time Clock Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required interface and package configuration. Check current lifecycle status as availability may vary. Ensure compliance with RoHS3 and REACH regulations for intended market deployment. Validate operating temperature ranges against application requirements.

Real Time Clock Selection Notes

Select this component when a serial 4-wire interface is required for space-constrained designs. Consider the wide voltage range for flexible power supply architectures. Evaluate the industrial temperature rating for harsh environment applications. Compare pinout compatibility if replacing existing RTC solutions. Verify software driver support for the specific serial protocol implementation.

Real Time Clock Part Context

This part belongs to the RX-4045SA series of real-time clocks from Epson Timing. These devices are designed for automotive and industrial applications requiring precise timekeeping. The series typically includes variants with different interfaces and packages. This specific model utilizes a serial 4-wire connection method distinct from SPI or I2C alternatives.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.