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SWD Pins on STM32L476RG

SSaha.1
Associate III

‎2020-06-30 07:23 PM

Instead of using JTAG, I would like to enable SWD programming (via STLink) for a custom STM32L476RG board that I am designing. Which pins of the MCU correspond to the 5 SWD pins normally found on boards like Nucleo and Sensortile? I probably found out 4 of the 5 pins (VDD, GND, NRST (reset) and SWDIO (PA13)) but can't find SWDCLK.

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Tesla DeLorean
Guru

‎2020-06-30 07:59 PM

PA13 (SWDIO), PA14 (SWCLK), PB3 (SWO), NRST, GND

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TDK
Guru

‎2020-06-30 07:59 PM

SWCLK is PA14.

Can be found in the reference manual, the datasheet, STM32CubeMX and other places.

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