User manual

DocID025833 Rev 9 9/61
UM1724 Hardware layout and configuration
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Figure 3. Bottom layout
5.1 Cuttable PCB
The STM32 Nucleo board is divided into two parts: ST-LINK part and target MCU part. The
ST-LINK part of the PCB can be cut out to reduce the board size. In this case the remaining
target MCU part can only be powered by VIN, E5V and 3.3V on STMicroelectronics Morpho
connector CN7 or VIN and 3.3V on Arduino connector CN6. It is still possible to use the
ST-LINK part to program the main MCU using wires between CN4 and SWD signals
available on STMicroelectronics Morpho connector (SWCLK CN7 pin 15 and SWDIO CN7
pin 13).
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