X1288V14Z-2.7AT1

Overview

The X1288V14Z-2.7AT1 is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation, belonging to the X1288 family. It provides clock/calendar functionality with an I²C interface and is housed in a 14-TSSOP package. The device operates on a main supply voltage of 2.7V to 5.5V and supports a battery backup input ranging from 1.8V to 5.5V. Key features include alarm capabilities, leap year compensation, a supervisor function, and a watchdog timer. The typical timekeeping current consumption is between 10µA and 20µA at the specified voltage range.

Feature Summary

• Integrated Real-Time Clock with Calendar supporting HH:MM:SS and YY-MM-DD-dd formats
• I²C (2-Wire Serial) communication interface
• Built-in Supervisor and Watchdog Timer functions
• Low power consumption: 10µA ~ 20µA during timekeeping

Applications

• Data logging systems requiring precise timestamping
• Industrial control equipment needing real-time tracking
• Consumer electronics with calendar and alarm features

Procurement Notes

This component is classified as obsolete or end-of-life by the manufacturer. Verification of availability should focus on distributor surplus stock or alternative sourcing channels rather than direct manufacturing orders. Ensure compatibility with existing PCB footprints if substituting.

Selection Notes

Select this part for applications requiring a low-pin-count RTC with integrated supervisory features. Verify that the system design accommodates the 14-TSSOP package dimensions (0.173" width). Confirm that the I²C bus speed requirements are met by the specific variant's electrical characteristics.

Part Context

The X1288 series represents a line of non-volatile RTCs designed for cost-sensitive applications. The 'V' suffix typically denotes the TSSOP package, while 'Z' often indicates lead-free/RoHS compliance. The 'AT1' suffix usually specifies tape-and-reel packaging for automated assembly.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to the obsolete status. Consider evaluating other Renesas RTC models or competitors offering similar I²C interfaces and package types, ensuring feature parity regarding watchdog timers and alarms.