X1288V14I-2.7A

Overview

The X1288V14I-2.7A is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation, designed for precise timekeeping and calendar functions in electronic systems. It features an I2C, 2-Wire Serial interface for communication with host microcontrollers. The device operates within a supply voltage range of 2.7V to 5.5V and supports battery backup from 1.8V to 5.5V. Time format includes HH:MM:SS in both 12 and 24-hour modes, while the date format is YY-MM-DD-dd. It is housed in a 14-TSSOP package with a width of 4.40mm. The component supports an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrated CPU supervisor and watchdog timer functionality for system monitoring
• Supports leap year correction for accurate long-term date tracking
• Includes alarm capabilities for scheduled system events
• Non-volatile memory retention via dedicated battery input

Applications

• Industrial control systems requiring reliable time stamping
• Consumer electronics needing calendar and clock functions
• Embedded devices with I2C-based processor architectures
• Data logging equipment requiring persistent time references

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential counterfeit risks. Confirm that the specific suffix 'A' matches the required revision level for your design, as it may indicate specific manufacturing lot or packaging variations. Ensure compatibility with existing PCB footprints for the 14-TSSOP package. Check for end-of-life status or obsolescence notices from Renesas before finalizing procurement plans to avoid supply chain disruptions.

Selection Notes

Select this component when a combined RTC, EEPROM, and supervisor solution is required in a single package. It is suitable for designs needing low-power timekeeping with I2C connectivity. Consider the 14-TSSOP form factor for space-constrained applications. Evaluate the need for integrated watchdog and alarm features to simplify system architecture. Ensure the host controller supports the necessary I2C protocols and address configurations.

Part Context

This part belongs to the X1288 series of real-time clocks from Renesas, which integrate timekeeping, memory, and system management functions. It is designed for applications requiring robust time data retention and system supervision. The series typically offers high accuracy and low power consumption, making it suitable for battery-backed systems. It complements other Renesas embedded solutions by providing essential timing and monitoring capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Renesas official resources for current equivalent recommendations if this component is obsolete or unavailable.

FAQ

What is the supported battery voltage range for the X1288V14I-2.7A?

The device supports a battery supply voltage range of 1.8V to 5.5V.

Does the X1288V14I-2.7A include a watchdog timer?

Yes, the component integrates a watchdog timer function alongside its real-time clock and calendar capabilities.