X1227V8IZ

Overview

The X1227V8IZ is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It provides clock/calendar functionality with an I2C, 2-wire serial interface. The device supports HH:MM:SS time format in both 12/24-hour modes and YY-MM-DD-dd date format. Key features include an alarm function, leap year compensation, a watchdog timer, and a monitor timer. It operates within a supply voltage range of 2.7V to 5.5V for main power and 1.8V to 5.5V for battery backup. The component is housed in an 8-SOIC package (0.154", 3.90mm width) and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrated Real-Time Clock with Calendar capabilities
• I2C, 2-Wire Serial Interface for communication
• Alarm, Leap Year, Watchdog Timer, and Monitor Timer features
• 8-SOIC Surface Mount Package

Applications

• Data logging systems requiring precise time stamping
• Industrial control equipment needing watchdog monitoring
• Consumer electronics with calendar and alarm functions

Procurement Notes

Verify the specific suffix 'V8IZ' against official Renesas documentation to confirm pinout and electrical specifications, as distributor listings may contain unverified data. Check product status, as similar models in this series are marked as obsolete or discontinued in public records. Ensure compatibility with existing I2C bus protocols and voltage levels before procurement.

Selection Notes

Select this component when a dedicated RTC with watchdog and monitor timers is required in an 8-pin SOIC package. Confirm that the I2C interface speed matches the system controller's capabilities. Verify that the operating temperature range of -40°C to 85°C meets the environmental requirements of the target application.

Part Context

The X1227 series from Renesas includes various RTC variants with different packages and interfaces. The X1227V8IZ specifically denotes the 8-SOIC package variant. Other series members may offer SPI interfaces or different pin counts. This part belongs to the broader category of real-time clock and calendar ICs used for timekeeping in embedded systems.

Replacement Considerations

Publicly available substitute part numbers for the exact X1227V8IZ configuration are not verified in the provided source material. Consult Renesas technical support or authorized distributors for cross-reference recommendations based on specific pinout and feature requirements.