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DocID025833 Rev 4 15/55

UM1724 Hardware layout and configuration

Figure 7. Connecting the STM32 Nucleo board to program the on-board STM32

5.2.4 Using ST-LINK/V2-1 to program/debug an external STM32 application

It is very easy to use the ST-LINK/V2-1 to program the STM32 on an external application.

Simply remove the two jumpers from CN2 as illustrated in

Figure 8, and connect your

application to the CN4 debug connector according to Table 4.

Note: SB12 NRST (target MCU RESET) must be OFF if you use CN4 pin 5 in your external

application.

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Table 4. Debug connector CN4 (SWD)

Pin CN4 Designation

1 VDD_TARGET VDD from application

2 SWCLK SWD clock

3 GND Ground

4 SWDIO SWD data input/output

5 NRST RESET of target MCU

6 SWO Reserved

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ST STM32 Nucleo board Specifications

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