Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Type: Module _x005f_x000D_ Condition: New _x005f_x000D_ Product size: 43.00x18.00x6.00mm _x005f_x000D_ Product size: 1.69x0.71x0.24inch _x005f_x000D_ Description: _x005f_x000D_ PCF8563 has various alarm functions, timer functions, clock output functions, and interrupt output functions, which can complete various complex timing services and even provide watchdog functions for microcontrollers. It is a cost-effective clock chip that has been widely used in the fields of electricity meters, water meters, gas meters, telephones, fax machines, portable instruments, and battery powered instruments. _x005f_x000D_ Main performance indicators of PCF8563: _x005f_x000D_ Backup battery available _x005f_x000D_ Wide voltage range of 1.0-5.5V. _x005f_x000D_ This ultra-low power consumption: typical value is 0.25uA _x005f_x000D_ It is serial input/output through the I2C bus _x005f_x000D_ This programmable clock output frequency is 32.768KHz, 1024Hz, 32Hz, 1Hz. _x005f_x000D_ 400KHZ read and write speed _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x Real Time Clock Module 1. High-Precision Time Calculation: The PCF8563T real time clock utilizes a high-precision crystal oscillator, enabling accurate and reliable time calculation and clock functionality. 2. Battery Backup: This RTC module board typically features a battery backup function, ensuring continuous power supply to the module in the event of a main power failure. The built-in battery guarantees the continuity of clock and time data. 3. I2C Interface: The PCF8563T RTC clock module uses the standard I2C serial communication interface, making it easy and convenient to connect with microcontrollers or other devices. 4. Compact Size Design: Designed with a small form factor, this real time clock module is compact and suitable for embedded applications or scenarios with limited space. Its small size allows for easy integration into various devices. 5. Multiple Alarm, Timer: Equipped with various alarm functions, timer functionality, clock output, and interrupt output capabilities, this clock module can fulfill a wide range of complex timing services. It offers versatility and flexibility for diverse application needs.