# ST-Link V2

The ST-Link V2 is a USB Programmer and Debugger für **Single Wire Debugger** compatible controllers, like the Raspberry Pi Pico.

It has the following pins:

<table class="w-fit min-w-(--thread-content-width)" data-end="729" data-start="344" id="bkmrk-pin-name-description"><thead data-end="370" data-start="344"><tr data-end="370" data-start="344"><th class="last:pe-10" data-col-size="sm" data-end="350" data-start="344">Pin</th><th class="last:pe-10" data-col-size="sm" data-end="357" data-start="350">Name</th><th class="last:pe-10" data-col-size="md" data-end="370" data-start="357">Description</th></tr></thead><tbody data-end="729" data-start="399"><tr data-end="446" data-start="399"><td data-col-size="sm" data-end="403" data-start="399">1</td><td data-col-size="sm" data-end="409" data-start="403">RST</td><td data-col-size="md" data-end="446" data-start="409">Reset pin of the target controller</td></tr><tr data-end="493" data-start="447"><td data-col-size="sm" data-end="451" data-start="447">2</td><td data-col-size="sm" data-end="459" data-start="451">SWCLK</td><td data-col-size="md" data-end="493" data-start="459">Debug clock (Serial Wire Clock)</td></tr><tr data-end="557" data-start="494"><td data-col-size="sm" data-end="498" data-start="494">3</td><td data-col-size="sm" data-end="505" data-start="498">SWIM</td><td data-col-size="md" data-end="557" data-start="505">Debug protocoll for STM8</td></tr><tr data-end="592" data-start="558"><td data-col-size="sm" data-end="562" data-start="558">4</td><td data-col-size="sm" data-end="570" data-start="562">SWDIO</td><td data-col-size="md" data-end="592" data-start="570">Debug data IO</td></tr><tr data-end="612" data-start="593"><td data-col-size="sm" data-end="597" data-start="593">5+6</td><td data-col-size="sm" data-end="603" data-start="597">GND</td><td data-col-size="md" data-end="612" data-start="603">Ground</td></tr><tr data-end="657" data-start="633"><td data-col-size="sm" data-end="637" data-start="633">7+8</td><td data-col-size="sm" data-end="644" data-start="637">3.3V</td><td data-col-size="md" data-end="657" data-start="644">3.3 Volt</td></tr><tr data-end="705" data-start="683"><td data-col-size="sm" data-end="687" data-start="683">9+10</td><td data-col-size="sm" data-end="694" data-start="687">5.0V</td><td data-col-size="md" data-end="705" data-start="694">5.0 Volt</td></tr></tbody></table>