J-Link 19-pin Cortex-M Adapter
The SEGGER J-Link 19-pin Cortex-M Adapter allows JTAG, SWD and SWO connections between SEGGER J-Link debugger and Cortex-M based target hardware systems. It adapts from the 20-pin 0.1'' JTAG connector to a 19-pin 0.05'' Samtec FTSH connector as defined by ARM.
The J-Link 19-pin Cortex-M Adapter may also be used to connect J-Link to a non Cortex-M target as far as the target connector uses the same pinout as shown below.
By default, TRST is not connected, but the Cortex-M Adapter comes with a solder bridge (NR1) which allows TRST to be connected to pin 9 of the Cortex-M adapter.
SEGGER J-Link debuggers are the most popular choice for optimizing the debugging and flash programming experience.
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