The NXP PCF2129AT/2,518 is a highly accurate Real Time Clock (RTC) IC with an integrated Temperature-Compensated Crystal Oscillator (TCXO) and crystal. This sophisticated timekeeping chip provides a comprehensive feature set that makes it ideal for a wide range of applications in consumer electronics, industrial, and utility metering.

Key Features

• High Accuracy: The device offers excellent timekeeping accuracy with a typical deviation of ±3 ppm at room temperature, translating to less than 2 minutes deviation per year.
• Integrated Crystal: The inclusion of a built-in crystal resonator ensures minimal component count and eases the design-in process, making it a convenient choice for system designers.
• Temperature Compensation: The TCXO feature compensates for the temperature-dependent frequency drift of the crystal, ensuring stable timekeeping across the device's operating temperature range.
• Low Power Consumption: Designed for battery-powered applications, the PCF2129AT/2,518 has a very low current consumption, which helps extend battery life.
• I2C Interface: The device supports a fast I2C-bus interface with a maximum data rate of 400 kbit/s, allowing for easy integration with microcontrollers and other digital systems.
• Multiple Timekeeping Functions: It includes a wealth of timekeeping features such as a programmable alarm, timer, and an integrated oscillator stop detection function, which provides a high level of functionality and flexibility.

Applications

The versatility of the NXP PCF2129AT/2,518 makes it suitable for a diverse array of applications. It is commonly used in consumer electronics such as smartwatches, clocks, and home automation systems. Industrial applications include timekeeping in metering devices, data loggers, and communication equipment. Its reliability and precision also make it an excellent choice for medical devices that require accurate time-stamping of events.

Package and Quality

The PCF2129AT/2,518 is offered in a small TSSOP14 package, which is optimal for space-constrained applications. NXP's commitment to quality ensures that each IC maintains the highest performance standards and reliability for professional and consumer-grade products alike.