X1227V8I-4.5A

Overview

The X1227V8I-4.5A is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation, designed for precise timekeeping and calendar functions in electronic systems. It features an I2C interface for communication and operates within a supply voltage range of 2.7V to 5.5V. The device supports battery backup operation from 1.8V to 5.5V, ensuring continuous timekeeping during main power loss. It includes alarm capabilities and leap year compensation, packaged in an 8-TSSOP format suitable for surface mount applications.

Feature Summary

• Integrated real-time clock with calendar functionality supporting HH:MM:SS and YY-MM-DD-dd formats
• Dual power supply options allowing main operation at 2.7V-5.5V and battery backup at 1.8V-5.5V
• I2C serial interface for system communication and configuration
• Hardware alarm feature with leap year compensation for accurate long-term timekeeping

Applications

• Embedded systems requiring persistent timekeeping
• Data logging equipment needing timestamp accuracy
• Consumer electronics with calendar display functions
• Industrial controllers utilizing alarm triggers

Procurement Notes

Verify component authenticity through authorized distributors as the part status may be discontinued. Confirm package integrity and pin alignment against the 8-TSSOP specification before integration. Ensure supply voltage levels match the specified operational ranges to prevent functional failure. Check for RoHS compliance status if required by specific environmental regulations.

Selection Notes

Select this component when a dedicated RTC with low pin count and I2C compatibility is required. Consider the 8-TSSOP package constraints for board layout. Evaluate the need for battery backup support if uninterrupted timekeeping is critical. Compare power consumption specifications against system energy budgets for optimal efficiency.

Part Context

This device belongs to the X1205 series of real-time clock ICs from Renesas. It shares architectural similarities with other members like the X1205V8I but offers specific voltage thresholds and packaging options tailored for diverse embedded applications. The series focuses on providing reliable timekeeping solutions with minimal external components.

Replacement Considerations

Check for direct substitutes within the X1205 family such as the X1205V8I. Verify pin-to-pin compatibility and register mapping equivalence before substitution. Ensure that any replacement maintains the same I2C interface protocol and voltage operating ranges.