The traditional 20 foot JTAG base is large, occupies more PCB area, and has complex connection line. Jlink SW model based on STM32F103C8T requires only three wires and the target board to achieve communication, can realize the program download, step debugging and other functions, but can not detect the target board voltage, can not be to the target board, power supply, speed is reduced, and the full version of JLink function is the same. Of course, the cost can be reduced a lot

手把手教你打造3线制Jlink_ARM-OB_STM32.pdf

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