X1288V14Z-4.5AT1

Overview

The X1288V14Z-4.5AT1 is a Real-Time Clock (RTC) IC with integrated EEPROM, manufactured by Renesas Electronics Corporation (formerly Intersil). It features an I2C interface and operates within a supply voltage range of 4.5V to 5.5V. The device includes a 32KB non-volatile memory block and supports date formats including YY-MM-DD and day-of-week. Key features include alarm functions, leap year compensation, Y2K compliance, and a watchdog timer. It is housed in a 14-TSSOP package and operates across a temperature range of -40°C to 85°C.

Feature Summary

• Integrated RTC with 32KB EEPROM
• I2C serial interface
• 14-TSSOP package
• -40°C to 85°C operating temperature

Applications

• Data logging systems requiring time-stamping
• Industrial control equipment needing real-time tracking
• Consumer electronics with calendar functions

Procurement Notes

Verify the manufacturer designation, as Intersil assets were acquired by Renesas. Confirm the specific suffix 'T1' indicates tape-and-reel packaging if required for automated assembly. Ensure compatibility with 5V logic levels given the 4.5V-5.5V supply specification.

Selection Notes

Select this component when both timekeeping and substantial non-volatile data storage are needed in a single package. The I2C interface minimizes pin count. Verify that the 32KB capacity meets application requirements compared to smaller variants like the X1287 or X1289.

Part Context

This part belongs to the X128x series of combined RTC/EEPROM devices. The 'V14' typically denotes the 14-pin TSSOP package variant. The '4.5A' suggests a specific voltage grade or revision within the 5V family. Renesas continues support for these legacy Intersil components.

Replacement Considerations

Check for direct equivalents such as the X1288V14IZ for bulk packaging. Consider newer Renesas RTCs if EEPROM integration is not strictly necessary. Verify pinout compatibility before substituting with other I2C RTCs.