X1288V14I-4.5A

Overview

The X1288V14I-4.5A is a Real-Time Clock (RTC) IC with integrated non-volatile memory, manufactured by Renesas Electronics Corporation under the Intersil brand. It provides clock/calendar functionality via an I2C interface and includes 32KB of EEPROM for data storage. The device supports a main supply voltage of 4.5V to 5.5V and a battery backup range of 1.8V to 5.5V. Key features include alarm capabilities, leap year compensation, a watchdog timer, and a power-fail monitor. It operates within a temperature range of -40°C to +85°C and is housed in a 14-TSSOP package.

Feature Summary

• Integrated 32KB EEPROM for persistent data storage alongside RTC functions
• I2C serial interface for communication with host microcontrollers
• Hardware features including alarm, watchdog timer, and power-fail monitor
• Automatic leap year compensation up to 2099

Applications

• Industrial control systems requiring precise timekeeping and data logging
• Consumer electronics with battery-backed real-time clock requirements
• Automotive infotainment and instrument clusters
• Smart metering devices needing non-volatile event recording

Procurement Notes

Verify component authenticity through authorized Renesas distributors or certified secondary market suppliers. Confirm RoHS compliance status and check for lead-free markings on the 14-TSSOP package. Ensure the specific suffix 'I-4.5A' matches the required industrial temperature grade and voltage specifications before procurement.

Selection Notes

Select this component when both timekeeping and significant non-volatile data storage are required in a single package. Compare against standard RTCs if only timekeeping is needed to reduce cost. Verify that the I2C bus speed and address configuration meet system requirements. Ensure the 14-TSSOP footprint fits the PCB layout constraints.

Part Context

This part belongs to the X1288 family of combined RTC and EEPROM devices from Intersil, now part of Renesas Electronics. The 'V' indicates voltage range, '14' denotes the 14-pin package, 'I' specifies industrial temperature range, and '4.5A' typically refers to the specific voltage/temperature variant or revision code.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to the specific combination of RTC and 32KB EEPROM. Check for other X1288 variants with different memory sizes or package types. Consider separate RTC and EEPROM solutions if functional integration is not strictly required.