X1228V14Z-2.7A

Overview

The X1228V14Z-2.7A is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation, belonging to the X1228 family. It provides clock/calendar functionality with an I²C interface in a 14-TSSOP package. The device operates on a main supply voltage of 2.7V to 5.5V and supports battery backup voltages from 1.8V to 5.5V. Key features include alarm capabilities, leap year correction, power failure detection, and watchdog timer functions. The component is currently classified as obsolete.

Feature Summary

• I²C Interface: Supports 2-wire serial communication for data transfer.
• Clock/Calendar: Tracks time in hours, minutes, and seconds; date includes day, month, and year with automatic leap year correction.
• Low Power Consumption: Maximum current consumption of 10µA to 20µA at 2.7V to 5V.
• Advanced Features: Includes single alarm, watchdog timer, and power failure detection.

Applications

• Industrial equipment requiring precise timekeeping.
• Consumer electronics with calendar and alarm functions.
• Data logging systems needing timestamp accuracy.

Procurement Notes

This component is officially marked as obsolete by the manufacturer. Availability is limited to existing stock or secondary market sources. Verify the authenticity of suppliers and check for RoHS3 compliance status before procurement. No new production units are expected.

Selection Notes

Select this part only if legacy compatibility with the X1228 family is required. Ensure the design supports the 14-TSSOP package dimensions. Consider that the I²C interface requires appropriate pull-up resistors. Verify that the operating temperature range of -40°C to 85°C meets the application environment requirements.

Part Context

The X1228V14Z-2.7A is part of the X1228 series of real-time clocks. It shares pinout compatibility with other devices in the family, such as those from STMicroelectronics and Maxim Integrated, facilitating potential drop-in replacements in existing designs where available.

Replacement Considerations

Rohm Semiconductor offers alternative parts. Check datasheets for electrical parameter matching, specifically supply voltage ranges and interface compatibility, before substitution.