클럭이란  디지탈 기기의 기본 동작, 상호 통신등에 필수적으로 활용되며,  전기적으로는 전압의 고저가 일정한 주기(주파수)로 반복되는 형태를 띱니다.

본 부품은  클럭 주파수를 8KHz 부터 160MHz 까지 광범위하게 제어하여 원하는 주파수의 클럭 신호를 만들어내는 부품입니다.

아두이노와 연결하는 방법 및 예제소스코드가 아래의 튜토리얼에 공개되어있습니다.

https://learn.adafruit.com/adafruit-si5351-clock-generator-breakout

DESCRIPTION

Never hunt around for another crystal again, with the Si5351A clock generator breakout from Adafruit! This chip has a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from <8KHz up to 150+ MHz.

The Si5351A clock generator is an I2C controller clock generator. It uses the onboard precision clock to drive multiple PLL's and clock dividers using I2C instructions. By setting up the PLL and dividers you can create precise and arbitrary frequencies. There are three independent outputs, and each one can have a different frequency. Outputs are 3Vpp, either through a breadboard-friendly header or, for RF work, an optional SMA connector.

We put this handy little chip onto it's own breakout board PCB, with a 3.3V LDO regulator so it can be powered from 3-5VDC. We also put level shifting circuitry on the I2C lines so you can use this chip safely with 3V or 5V logic.

Best of all, we even have a great tutorial and library to get you started! Our code is designed for use with the Arduino microcontroller and IDE but is easily ported to your favorite platform with I2C support

• Dimensions: 31mm x 22mm x 2mm / 1.22" x .87" x .08"
• Weight: 2.5 grams
• Datasheets, PCB CAD files, and Fritzing objects available in tutorial

Adafruit Si5351 Clock Generator Breakout

Generate ALL the frequencies!