Connect SWD_CLK and SWD_RESET for 4 KL05

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Connect SWD_CLK and SWD_RESET for 4 KL05

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javierhernande1
Contributor IV

Hello,

I have 4 KL05 in a board, Can I connect the SWD_CLK and RESET pins of the 4 mcus?

Best regards

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kerryzhou
NXP TechSupport
NXP TechSupport

Hi Javier Hernandez,

   No, you can connect SWD_DIO and RESET together, but not the SWD_CLK, each chip should have the independent SWD_CLK, otherwise, you can't program it.

Have a great day,
Kerry

 

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javierhernande1
Contributor IV

Better if is possible for common SWD_DIO and RESET because so I can reduce the BOM.

swd.png

If possible, that would be ideal.

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kerryzhou
NXP TechSupport
NXP TechSupport

Hi Javier Hernandez,

   No, you can connect SWD_DIO and RESET together, but not the SWD_CLK, each chip should have the independent SWD_CLK, otherwise, you can't program it.

Have a great day,
Kerry

 

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

 

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

1,158 Views
javierhernande1
Contributor IV

Thank you

I have common RESET and SWD_DIO  pins in the 10pos. pin socket. and the 4 pads in the center of the board are the 4 SWD_CLK, one for each mcu.

Best regardsimage1.jpg

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kerryzhou
NXP TechSupport
NXP TechSupport

You are welcome!

 This design is OK to debug for each MCU.

Have a great day,
Kerry