X1288V14Z

Overview

The X1288V14Z is a Real-Time Clock (RTC) IC with an integrated 32KB EEPROM, manufactured by Renesas Electronics Corporation. It operates via an I²C, 2-wire serial interface and is housed in a 14-TSSOP package (0.173", 4.40mm width). The device supports a main supply voltage of 4.5V to 5.5V and a battery backup range of 1.8V to 5.5V. Timekeeping current consumption ranges from 10µA to 20µA at 2.7V to 5V. It features date formats including YY-MM-DD-dd and time formats HH:MM:SS:hh (24-hour). The component is classified as obsolete.

Feature Summary

• Integrated 32KB EEPROM for data storage alongside RTC functionality
• I²C, 2-Wire Serial Interface for communication
• Features include Alarm, Leap Year, Supervisor, Watchdog Timer, Y2K compliance, SRAM, and EEPROM
• Operating temperature range of 0°C to 70°C (TA)

Applications

• Systems requiring precise timekeeping with non-volatile data storage
• Industrial control systems needing watchdog timer and supervisor functions
• Consumer electronics utilizing I²C interfaces

Procurement Notes

The X1288V14Z is listed as an obsolete product by the manufacturer. Availability is limited to existing stock or third-party distributors. Verification of part authenticity and condition is critical due to the end-of-life status. No new production is guaranteed. Buyers should confirm lead times and return policies carefully when sourcing from secondary markets.

Selection Notes

Select this component only if legacy compatibility with the Intersil/Renesas X1288 family is required. Ensure the design accommodates the 14-TSSOP package dimensions. Verify that the 0°C to 70°C operating temperature range meets system environmental requirements. Consider newer Renesas RTC alternatives if new designs are permitted, as this part is no longer in active production.

Part Context

The X1288 series combines RTC and EEPROM functions in a single package. The 'V' suffix typically denotes the commercial temperature grade (0°C to 70°C), while 'IZ' often indicates specific packaging or RoHS compliance variations within the same functional family. This specific model represents the commercial grade variant of the X1288 line.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to the obsolete status. Review Renesas's current RTC portfolio with integrated memory for potential upgrades. Cross-reference with other manufacturers offering I²C RTCs with EEPROM if form-factor constraints allow.