The PCF8563 PCF8563T 8563 IIC Real Time Clock RTC Module is a compact and efficient timekeeping solution for embedded and microcontroller-based applications. Built around the high-performance NXP PCF8563T chip, it provides stable, accurate, and programmable real-time clock functionality using the I2C communication protocol (up to 400KHz).
Compared to DS1302 and DS1307 modules, this RTC module delivers higher precision and reliability. It features timekeeping, calendar, alarm, programmable timer, and clock output functions. Equipped with an external quartz crystal and battery backup support, this module maintains accurate time even during power outages, making it ideal for data loggers, automation systems, and real-time embedded projects.
🔧 Key Features
- Highly accurate NXP PCF8563T RTC IC
- Supports I2C communication up to 400KHz
- Clock/calendar with second, minute, hour, day, month, and year counters
- Programmable alarm and timer functionality
- Programmable external clock output
- Compact PCB size for embedded projects
- Battery backup support for power failure resilience
- Low power consumption design
- External crystal for stable timekeeping
- Compatible with Arduino, Raspberry Pi, ESP32, and more
📐 Technical Specifications
Product Name | PCF8563 PCF8563T 8563 IIC Real Time Clock RTC Module |
RTC IC | NXP PCF8563T |
Communication Interface | I2C (Standard Mode up to 100KHz, Fast Mode up to 400KHz) |
Functions | Clock, Alarm, Timer, Clock Output |
Time Format | 24-Hour BCD Format |
Power Supply Voltage | 2.5V – 5.5V DC |
Clock Accuracy | ±1ppm with external crystal (typ.) |
Crystal Oscillator | 32.768kHz external crystal |
Operating Temperature | -40°C to +85°C |
Backup Battery Support | Yes, CR1220/CR2032 (not included) |
Module Dimensions | Approx. 28mm × 14mm |
Weight | ~3g |
📌 Applications
- Data logging and timestamping systems
- Real-time clock source for Arduino/MCUs
- IoT devices and remote monitoring
- Smart home automation projects
- Portable or battery-powered electronics
💡 Why Choose This Module?
The PCF8563 RTC Module is a superior timekeeping solution with versatile features like alarms and programmable timers. It’s ideal for microcontroller projects needing accurate date/time information, especially when reliability and low power are crucial.
📦 Package Includes
- 1 × PCF8563 RTC Module
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