HOW TO DOWNLOAD for MK20DX128

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HOW TO DOWNLOAD for MK20DX128

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723679104
Contributor I

I  will use the SWD to download MK20DX128 ? How will  do it ?QQ图片20190704122752.pngQQ图片20190704122811.pngQQ图片20190704122821.pngQQ图片20190704122837.png

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kerryzhou
NXP TechSupport
NXP TechSupport

Hi 旺生 黄 ,

    Is your MK20DX128 board new? Or you protect your board?

    Please try to use the JLINK to do the mass erase at first.

   In the JLINK commander, when you select the device, please select the MK20DX128xxx<ALLOW SECURITY>.

  After connect, even it is failed, please input: unlock kinetis

    Can you unlock it successfully, then you can connect it again, can you find the ARM core or not?

   If you still can't unlock it, please check this post:

https://community.nxp.com/servlet/JiveServlet/download/857127-1-396709/Kinetis+Lock+issue+analysis+a... 


Have a great day,
Kerry

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723679104
Contributor I

hi Kerry,

Thanks in the first!

I choose the MCU is MKL26Z256.

and where can I download the bootloader for MK20DX128.. ?how i to choose Which Version?

br

sam

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kerryzhou
NXP TechSupport
NXP TechSupport

Hi Sam,

    If you are using the MKL26Z256, why you need to download the MK20 bootloader?

    If you want to get the K20 bootloader, please tell me your K20 chip full name, as you know, K20 have a lot of series with different frequency.

   You can check the KSDK, whether it can support your chip or not, if yes, when you generate the SDK code, in the middleware, please choose the KBOOT.

Welcome | MCUXpresso SDK Builder 

Wish it helps you!

Any updated information, please kindly let me know.
Have a great day,
Kerry

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- We are following threads for 7 weeks after the last post, later replies are ignored
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