{"product_id":"pcf8563-iic-real-time-clock-rtc-module-board-3-3v","title":"PCF8563 IIC Real-Time Clock RTC Module Board 3.3V","description":"\n\u003ch2\u003ePCF8563 IIC Real-Time Clock (RTC) Module Board – 3.3V\u003c\/h2\u003e\n\u003cp\u003eKeep your microcontroller projects running on precise time with the \u003cstrong\u003ePCF8563 \/ PCF8563T IIC Real-Time Clock (RTC) Module Board\u003c\/strong\u003e. Operating at \u003cstrong\u003e3.3V\u003c\/strong\u003e and communicating over the standard \u003cstrong\u003eI²C (IIC) interface\u003c\/strong\u003e, this compact SMD module is an excellent choice for Arduino, Raspberry Pi, ESP32, and other embedded development platforms. Its low power consumption and highly accurate timekeeping make it a reliable upgrade over older RTC solutions.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCF8563 \/ PCF8563T IC:\u003c\/strong\u003e Industry-proven real-time clock chip delivering accurate time and calendar data (seconds, minutes, hours, day, date, month, year).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI²C (IIC) Interface:\u003c\/strong\u003e Simple two-wire communication (SDA + SCL) for easy integration with virtually any microcontroller or single-board computer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.3V Operating Voltage:\u003c\/strong\u003e Ideal for modern 3.3V systems; low power dissipation for battery-backed and energy-sensitive designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD Package:\u003c\/strong\u003e Compact surface-mount design fits neatly into tight enclosures and DIY projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlarm \u0026amp; Timer Functions:\u003c\/strong\u003e Built-in alarm and countdown timer interrupt outputs for event-driven applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable Clock Output:\u003c\/strong\u003e Configurable square-wave output for clocking other devices or testing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Condition:\u003c\/strong\u003e Brand new module — ready to solder and deploy straight out of the packet.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e RoHS-friendly build with no flagged hazardous substances.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIC Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCF8563 \/ PCF8563T\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eI²C (IIC)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSMD\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Module\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat Can You Build With It?\u003c\/h3\u003e\n\u003cp\u003eThis RTC module is perfect for a wide range of maker and professional projects, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eData loggers that timestamp sensor readings\u003c\/li\u003e\n  \u003cli\u003eSmart home automation schedules\u003c\/li\u003e\n  \u003cli\u003eAlarm clocks and calendar displays\u003c\/li\u003e\n  \u003cli\u003eIndustrial control systems requiring precise timekeeping\u003c\/li\u003e\n  \u003cli\u003eBattery-backed time references for embedded systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cp\u003eArduino Uno\/Nano\/Mega, Raspberry Pi, ESP8266, ESP32, STM32, and most other I²C-capable microcontrollers and development boards.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the PCF8563 and DS3231 RTC modules?\u003c\/h4\u003e\n\u003cp\u003eA: The PCF8563 is a highly reliable, low-power I²C RTC chip that operates at 3.3V, making it ideal for modern low-voltage microcontrollers. While the DS3231 includes a built-in temperature-compensated crystal oscillator (TCXO) for higher accuracy, the PCF8563 offers excellent timekeeping performance at lower cost and power consumption, making it a great fit for most hobbyist and embedded projects where extreme precision is not critical.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this RTC module work with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The PCF8563 RTC module communicates via the standard I²C (IIC) protocol (SDA and SCL lines), which is natively supported by Arduino, Raspberry Pi, ESP32, ESP8266, STM32, and virtually all popular development boards. Numerous open-source libraries are available to get you up and running quickly.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the module require an external battery for backup?\u003c\/h4\u003e\n\u003cp\u003eA: To maintain timekeeping when the main power supply is disconnected, you can connect a small backup battery (typically a CR2032 coin cell) to the module's VBAT pin. This allows the PCF8563 to continue tracking time even when your main circuit is powered off.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the PCF8563 and DS3231 RTC modules?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The PCF8563 is a highly reliable, low-power I²C RTC chip that operates at 3.3V, making it ideal for modern low-voltage microcontrollers. 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