X1288V14-2.7T1

Overview

The X1288V14-2.7T1 is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It provides clock/calendar functionality with an I²C and 2-wire serial interface, housed in a 14-TSSOP package. The device operates on a supply voltage of 2.7V to 5.5V, with battery backup support from 1.8V to 5.5V. Key features include alarm capabilities, leap year compensation, supervisor functions, and a watchdog timer. It supports HH:MM:SS time format and YY-MM-DD-dd date format, consuming 10µA to 20µA during timekeeping at standard voltages.

Feature Summary

• Integrated Real-Time Clock with Calendar functionality
• I²C and 2-Wire Serial Interface compatibility
• Low power consumption: 10µA ~ 20µA @ 2.7V ~ 5V
• Includes Alarm, Leap Year, Supervisor, and Watchdog Timer features

Applications

• Data logging systems requiring precise timestamping
• Battery-backed real-time clock applications
• Industrial control systems needing watchdog supervision

Procurement Notes

This component is classified as obsolete or end-of-life. Verification of availability should focus on surplus distributors or last-time-buy options rather than standard manufacturing channels. Confirm RoHS compliance status and specific packaging variants when sourcing replacements.

Selection Notes

Select this part for applications requiring a dedicated RTC with I²C connectivity and low standby current. Ensure the design accommodates the 14-TSSOP footprint and 2.7V minimum operating voltage. Verify that the required temperature range aligns with the specified 0°C to 70°C commercial grade if industrial ratings are not explicitly confirmed for this suffix.

Part Context

The X1288 series belongs to Renesas' line of non-volatile memory and real-time clock devices. This specific model integrates calendar logic with supervisory functions, distinguishing it from pure EEPROM or digital potentiometer counterparts in the same manufacturer portfolio.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to the obsolete status. Check for updated Renesas RTC models with similar I²C interfaces and TSSOP-14 packages. Verify functional equivalence regarding alarm registers and watchdog timing configurations before substitution.