PCF8563 IIC Real-Time Clock RTC Module Board 3.3V
PCF8563 IIC Real-Time Clock RTC Module Board 3.3V
PCF8563 IIC Real-Time Clock (RTC) Module Board – 3.3V
Keep your microcontroller projects running on precise time with the PCF8563 / PCF8563T IIC Real-Time Clock (RTC) Module Board. Operating at 3.3V and communicating over the standard I²C (IIC) interface, 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.
Key Features
- PCF8563 / PCF8563T IC: Industry-proven real-time clock chip delivering accurate time and calendar data (seconds, minutes, hours, day, date, month, year).
- I²C (IIC) Interface: Simple two-wire communication (SDA + SCL) for easy integration with virtually any microcontroller or single-board computer.
- 3.3V Operating Voltage: Ideal for modern 3.3V systems; low power dissipation for battery-backed and energy-sensitive designs.
- SMD Package: Compact surface-mount design fits neatly into tight enclosures and DIY projects.
- Alarm & Timer Functions: Built-in alarm and countdown timer interrupt outputs for event-driven applications.
- Programmable Clock Output: Configurable square-wave output for clocking other devices or testing.
- New Condition: Brand new module — ready to solder and deploy straight out of the packet.
- No High-Concern Chemicals: RoHS-friendly build with no flagged hazardous substances.
Specifications
| IC Chip | PCF8563 / PCF8563T |
| Interface | I²C (IIC) |
| Supply Voltage | 3.3V |
| Package | SMD |
| Quantity | 1 Module |
| Condition | New |
| Origin | Made in Mainland China |
What Can You Build With It?
This RTC module is perfect for a wide range of maker and professional projects, including:
- Data loggers that timestamp sensor readings
- Smart home automation schedules
- Alarm clocks and calendar displays
- Industrial control systems requiring precise timekeeping
- Battery-backed time references for embedded systems
Compatible With
Arduino Uno/Nano/Mega, Raspberry Pi, ESP8266, ESP32, STM32, and most other I²C-capable microcontrollers and development boards.
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Frequently Asked Questions
Q: What is the difference between the PCF8563 and DS3231 RTC modules?
A: 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.
Q: Does this RTC module work with Arduino and Raspberry Pi?
A: 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.
Q: Does the module require an external battery for backup?
A: 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.