X1227V8Z-4.5A

Overview

The X1227V8Z-4.5A is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It features an I2C, 2-Wire Serial interface and is housed in an 8-TSSOP package with a width of 4.40mm. The device provides clock/calendar functionality including alarm, leap year, supervisor, and watchdog timer features. It operates within a temperature range of 0°C to 70°C and is RoHS3 compliant.

Feature Summary

• Integrates real-time clock and calendar functions with alarm capabilities
• Includes built-in supervisor and watchdog timer for system protection
• Supports leap year compensation for accurate timekeeping
• Utilizes I2C 2-Wire Serial interface for data communication

Applications

• Industrial control systems requiring precise timekeeping
• Consumer electronics needing calendar and alarm functions
• Embedded devices utilizing I2C communication protocols

Procurement Notes

Verify component authenticity through authorized channels as the part status is listed as obsolete. Confirm package dimensions and interface compatibility with existing PCB layouts. Check for RoHS3 compliance documentation if required for specific regulatory standards. Ensure replacement strategies are in place due to end-of-life status.

Selection Notes

Select this component when I2C connectivity and integrated system supervision are required. Consider the 8-TSSOP package size constraints during design. Evaluate thermal requirements against the 0°C to 70°C operating range. Verify that the 4.5V threshold aligns with system voltage levels for proper supervisor operation.

Part Context

This RTC belongs to the X1227 series from Renesas, designed for low-power timekeeping applications. It combines standard clock functions with additional system management features like watchdog timers. The series typically targets embedded systems where space efficiency and reliable time tracking are critical.

Replacement Considerations

Public confirmed substitute part numbers: X1227V8I-4.5A.