X1227V8I

Overview

The X1227V8I is a Real Time Clock (RTC) IC providing clock and calendar functionality via an I2C, 2-Wire Serial interface. It supports HH:MM:SS time format in both 12/24-hour modes and YY-MM-DD-dd date format. The device operates within a supply voltage range of 2.7V to 5.5V and features a maximum current consumption of 10µA to 20µA at 2.7V to 5V. It is housed in an 8-TSSOP package with dimensions of 0.173 inches (4.40mm width). The component functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrated clock and calendar functionality with programmable alarm capabilities
• Supports leap year calculation for accurate long-term timekeeping
• Includes watchdog timer and monitor functions for system reliability

Applications

• Embedded systems requiring precise timekeeping
• Data logging devices needing timestamp accuracy
• Industrial control systems operating in wide temperature ranges

Procurement Notes

Verify the specific suffix variant against official Renesas documentation, as different suffixes may indicate distinct voltage ranges or package types. Confirm RoHS compliance status, as some variants in this family may not meet current environmental standards. Check product lifecycle status, as this model may be discontinued or subject to last-time-buy restrictions. Ensure the selected part number matches the required interface and package specifications for your design.

Selection Notes

Select this RTC when I2C connectivity is required for space-constrained designs using the 8-TSSOP package. Consider the low standby current for battery-backed applications. Verify that the operating voltage range aligns with the system's power rails. Evaluate the need for integrated watchdog and alarm features versus external components. Confirm temperature ratings suit the intended operational environment.

Part Context

The X1227V8I belongs to the X1227 series of real-time clocks from Renesas Electronics. This series is designed for embedded applications requiring accurate timekeeping with minimal external components. The V8I suffix typically denotes the 8-TSSOP package variant. Related models include the X1227S8IZ for SOIC packages and other voltage-specific variants like the X1227V8I-2.7A.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Consult Renesas official documentation for direct replacements or obsolescence notices.