Overview of NXP PCF2123TS/1

The NXP PCF2123TS/1 is a highly integrated, low-power real-time clock/calendar optimized for timekeeping in embedded systems. Designed with precision and reliability in mind, it offers a wide range of features that make it an excellent choice for applications that require accurate timekeeping under power-constrained conditions.

Key Features

• High Accuracy: The device maintains excellent time accuracy with a deviation of only ±3 ppm at room temperature, which translates to less than 2 minutes per year.
• Low Power Consumption: It operates with very low power consumption, with a typical standby current of less than 0.25 µA, making it suitable for battery-powered applications.
• SPI-Bus Interface: The PCF2123TS/1 is equipped with a serial peripheral interface (SPI) that allows for easy integration into most microcontroller-based systems.
• Programmable Clock Output: A programmable clock output function is available, which can be used for peripheral device clocking or as a periodic system wake-up signal.
• Alarm and Timer Functions: The device features an alarm function and a timer function that can be used to generate interrupts, helping to manage power consumption by waking the system only when needed.
• Wide Operating Voltage: It operates over a wide voltage range from 1.8 V to 5.5 V, accommodating a variety of power supply options.

Applications

The PCF2123TS/1 is ideal for a broad range of applications, including:

• Portable devices
• Wearable electronics
• Healthcare monitoring systems
• Industrial and IoT devices
• Utility meters
• Smart home automation

Package and Temperature Range

The device is offered in an 8-pin TSSOP package, which is suitable for space-constrained applications. It is designed to operate over the industrial temperature range of -40°C to +85°C, ensuring reliable performance across diverse environments.

With its combination of features, the NXP PCF2123TS/1 RTC provides an efficient and versatile timekeeping solution that can be seamlessly integrated into a multitude of electronic products, delivering accurate time and date information with minimal power consumption.