X1227V8IZ-2.7A

Overview

The X1227V8IZ-2.7A is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation, designed for precise timekeeping in embedded systems. It features an I²C, 2-Wire Serial interface for communication and supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS in both 12-hour and 24-hour modes. The device operates within a supply voltage range of 2.7V to 5.5V, with battery supply support from 1.8V to 5.5V. Timekeeping current consumption is specified as 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 and functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrated alarm functionality for system event triggering
• Automatic leap year compensation for accurate long-term date tracking
• Built-in supervisor and watchdog timer capabilities for system monitoring

Applications

• Embedded systems requiring persistent timekeeping
• Data logging devices needing timestamp accuracy
• Industrial control units with environmental monitoring

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the high risk of counterfeits in the RTC market. Confirm that the specific suffix matches the required package and voltage specifications. Check for RoHS compliance status if environmental regulations apply to your assembly process. Ensure storage conditions adhere to moisture sensitivity level requirements to prevent package damage before reflow soldering.

Selection Notes

Select this component when a dedicated RTC with low power consumption and I²C connectivity is required. Compare against alternatives based on package size constraints, as the 8-TSSOP form factor may limit board space availability. Evaluate the need for additional features like square wave output or backup battery switching if not provided internally. Consider the operating temperature range suitability for harsh industrial environments compared to commercial grade options.

Part Context

This part belongs to the X1227 series of real-time clocks from Renesas, which are designed for general-purpose timekeeping applications. The series typically includes variants with different package options and voltage ranges. It serves as a standalone solution for maintaining calendar and time data without requiring external crystals or complex initialization routines, integrating essential timing logic into a compact surface-mount package.

Replacement Considerations

Check for cross-reference parts such as the X1227S8IZ-2.7 or X1227V8IZ-2.7 depending on package preference. Verify pin compatibility and register map alignment before substitution. Ensure the replacement supports the same I²C address configuration and voltage levels. Confirm that any substitute maintains the same feature set including alarm and watchdog functionalities.