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SparkFun Clock Generator Breakout - 5P49V60 (Qwiic)

The SparkFun Qwiic Clock Generator Breakout offers a wide range of customizable frequencies in a wide range of different signal types using a single reference clock. Four (single output) clock outputs can generate frequencies from 1MHz-200MHz and eight (differential output) clock outputs can generate frequencies from 1MHz-350MHz. The frequency's many properties can be manipulated in code via I2C using the SparkFun Arduino Library.

There are two Qwiic connectors populated on the board to easily configure the clock generator without the need of soldering to the I2C lines. However, soldering is required to connect to the clock outputs. Additionally, there are four banks of programmable memory available for when it's ready to sit on its own within the project without a microcontroller.

Note: An oscilloscope is highly recommended to verify that the programmed clock signal is correct as its the only way to verify the output accurately.


The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.


  • I2C serial programmable interface (Qwiic-enabled)
    • Arduino Library to manipulate frequencies via I2C
  • Two selectable addresses
    • 0x6A (default) or 0x68
  • 4x single ended clock outputs can generate frequencies from 1MHz-200MHz in the following signal output:
    • LVCMOS
  • 8x differential clock outputs can generate frequencies from 1MHz-350MHz in the following differential outputs:
    • LVDS
    • LVPECL
    • HCSL
  • Operating temperature range
    • -40°C to +105°C
  • Operating voltage range
    • 1.8V, 2.5V, 3.3V
    • Typically 3.3V using the Qwiic cable
  • 4x One-Time Programmable (OTP) banks of programmable memory
  • Programmable output enable or power-down mode
  • Redundant clock inputs with manual switchover
  • AEC-Q100 qualified

SparkFun Clock Generator Breakout - 5P49V60 (Qwiic) Product Help and Resources

SparkFun Clock Generator 5P49V60 (Qwiic) Hookup Guide

February 28, 2020

The SparkFun Clock Generator 5P49V60 (Qwiic) breakout board offers a wide range of customizable frequencies in a wide range of different signal types using a single reference clock. This hookup guide will go over all of the many available functions and gives the hardware rundown on what exactly is on this board.

Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

1 Soldering

Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

3 Programming

Skill Level: Competent - The toolchain for programming is a bit more complex and will examples may not be explicitly provided for you. You will be required to have a fundamental knowledge of programming and be required to provide your own code. You may need to modify existing libraries or code to work with your specific hardware. Sensor and hardware interfaces will be SPI or I2C.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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