topic Connect SWD_CLK and SWD_RESET for 4 KL05 in Kinetis Microcontrollers

Connect SWD_CLK and SWD_RESET for 4 KL05

javierhernande1 — Mon, 18 Nov 2019 15:04:20 GMT

Hello,

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

Best regards

Re: Connect SWD_CLK and SWD_RESET for 4 KL05

javierhernande1 — Mon, 18 Nov 2019 16:04:53 GMT

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

If possible, that would be ideal.

Re: Connect SWD_CLK and SWD_RESET for 4 KL05

kerryzhou — Tue, 19 Nov 2019 01:56:51 GMT

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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Re: Connect SWD_CLK and SWD_RESET for 4 KL05

javierhernande1 — Fri, 22 Nov 2019 12:19:53 GMT

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 regards

Re: Connect SWD_CLK and SWD_RESET for 4 KL05

kerryzhou — Mon, 25 Nov 2019 01:55:12 GMT

You are welcome!

This design is OK to debug for each MCU.

Have a great day,
Kerry