DocID025174 Rev 1 17/39
UM1669 Hardware layout
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4.2.2 Using ST-LINK/V2 to program/debug an external STM32 application
It is very easy to use the ST-LINK/V2 to program the STM32 on an external application.
Simply remove the 2 jumpers from CN3 as shown in Figure 8, and connect your application
to the CN2 debug connector according to Table 4.
Note: SB13 must be OFF if you use CN2 pin 5 in your external application.
Figure 8. ST-Link connections image
Table 4. Debug connector CN2 (SWD)
Pin CN2 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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