X1228S14Z-2.7A

Overview

The X1228S14Z-2.7A is a Real-Time Clock (RTC) and calendar integrated circuit manufactured by Renesas Electronics Corporation. It features an I2C, 2-wire serial interface for data communication. The device operates within a supply voltage range of 2.7V to 5.5V, with battery backup support from 1.8V to 5.5V. Timekeeping current consumption ranges from 10µA to 20µA at the specified voltage levels. It is housed in a 14-SOIC package (0.154", 3.90mm width) and supports surface mount installation. The component tracks time in hours, minutes, and seconds, and dates including day, month, and year.

Feature Summary

• I2C Interface: Supports 2-wire serial communication protocol.
• Calendar Functions: Tracks date, day of week, month, and year with leap year correction.
• Alarm Capability: Includes programmable alarm features.
• Supervisory Features: Integrates supervisor and watchdog timer functions.

Applications

• Clock/Calendar systems requiring real-time tracking
• Devices utilizing I2C communication buses
• Applications needing battery-backed timekeeping

Procurement Notes

Verify component status as obsolete or end-of-life through official Renesas channels before procurement planning. Confirm RoHS compliance status, as specific suffixes may indicate different environmental certifications. Ensure compatibility with existing 14-SOIC footprints and I2C bus requirements during sourcing evaluation.

Selection Notes

Select this component when a dedicated RTC with supervisory functions is required in a 14-SOIC package. Verify that the system design accommodates the 2.7V to 5.5V main supply and 1.8V to 5.5V battery supply ranges. Ensure the application environment falls within the -40°C to 85°C operating temperature specification.

Part Context

This part belongs to the X1228 family of real-time clock ICs. It shares functional similarities with other devices in the series but is distinguished by its SOIC packaging and specific electrical characteristics. The base product number is X1228. Designers should consult the specific datasheet for pinout and register details distinct from other package variants like TSSOP.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference tools may identify parametrically similar parts, but direct substitution requires verification of pin compatibility and feature parity with the original design specifications.