Difference between External and Internal Clock for KEA-128?

[vigneshbalaji]

Hi,

     I want to know the difference between external and internal clock of KEA-128?I want a detailed Explanation on it taking in all the constrains.If there is any article or app notes or documents it will be great :smileyhappy:

[kerryzhou]

Hi VIGNESH BALAJI,

    External crystal: have more accurate clock.

    Internal IRC: lower accurate clock, and it will be influenced by the temperature. but it can same the cost, and two IO pin, if the system don't have higher clock accurate requirement, the internal IRC is a good choose.

  But if you want to have higher clock accurate demand and need to use USB, we suggest you use the external clock.

Wish it helps you!

Have a great day,
Jingjing

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