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PCF8563T/5

Updated: 2026-07-18

Overview

The PCF8563T/5 is a widely used Real-Time Clock (RTC) IC designed for accurate timekeeping in various electronic devices. It operates with minimal power consumption, making it suitable for battery-powered applications such as smart meters, wearables, and industrial equipment. The IC communicates via the I2C-bus interface, allowing easy integration with microcontrollers and other digital systems. Developed by NXP Semiconductors, the PCF8563T/5 is known for its reliability and precision. It includes features like programmable clock output, alarm functions, and a built-in oscillator, ensuring consistent performance across different operating conditions. Its compact form factor and low power requirements make it a preferred choice for modern electronic designs.

Structure and Working Principle

PCF8563T/5,518 实时时钟芯片 原厂出品 封装SOIC-8 批次23+24+深圳市龙宏电子科技有限公司

The PCF8563T/5 integrates a 32.768 kHz crystal oscillator, a counter chain, and an I2C-bus interface. The oscillator generates the base frequency, which is divided down to provide seconds, minutes, hours, and other timekeeping functions. The I2C interface allows the host system to read and write time data, as well as configure alarm settings. The IC operates on a supply voltage ranging from 1.0V to 5.5V, making it versatile for various power environments. Its low standby current (typically 0.25 µA) ensures prolonged battery life in portable devices. The programmable clock output can be configured to provide square wave signals at different frequencies, adding flexibility for system designers.

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Key Features

The PCF8563T/5 boasts several key features that enhance its utility in electronic designs. Its ultra-low power consumption is particularly notable, with a typical operating current of just 0.25 µA. This makes it ideal for battery-operated devices where energy efficiency is critical. Other features include a wide operating voltage range (1.0V to 5.5V), a built-in oscillator requiring no external components, and an I2C-bus interface for easy communication. The IC also supports alarm functions and a programmable clock output, which can be used to trigger external events or provide timing signals to other components.

Application Areas

The PCF8563T/5 is used in a variety of applications where accurate timekeeping is essential. Common uses include smart meters, wearable devices, medical equipment, and industrial automation systems. Its low power consumption and small footprint make it particularly suitable for portable and battery-powered devices. In consumer electronics, the IC is often found in digital clocks, kitchen appliances, and home automation systems. Industrial applications include data loggers, security systems, and process control equipment. The versatility and reliability of the PCF8563T/5 ensure its continued popularity across multiple sectors.

Maintenance and Precautions

PCF8563T/F4 封装SOIC-8-150mil 电压1V~5.5V 实时时钟(RTC) 批次25+深圳市欣向阳科技有限公司

Proper handling and maintenance of the PCF8563T/5 are crucial to ensure its longevity and performance. Always use electrostatic discharge (ESD) protection when handling the IC to prevent damage from static electricity. Avoid exposing the device to excessive moisture or high temperatures, as these conditions can affect its functionality. When soldering, adhere to the recommended temperature profiles to prevent thermal damage. Ensure that the power supply voltage remains within the specified range (1.0V to 5.5V) to avoid operational issues. Regular firmware updates for the host system can also help maintain optimal performance and compatibility.

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B2B Procurement Guide

When procuring the PCF8563T/5 in bulk for B2B applications, consider factors such as lead time, supplier reliability, and pricing. The IC is commonly available through authorized distributors of NXP Semiconductors, ensuring genuine and high-quality components. Prices typically range from $0.50 to $2.00 per unit, depending on order volume and supplier. Verify the compatibility of the IC with your system's I2C bus and power requirements before placing an order. It's also advisable to request samples for testing to ensure the component meets your specific needs. Long-term supply agreements can help secure stable pricing and availability, especially for large-scale production.

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