Pre-Cut Pcb; Embedded St-Link/V2-1; Table 4. Jumper States - ST STM32 User Manual

Hardware layout and configuration
6.1

Pre-cut PCB

The STM32 Nucleo board is divided into two parts: ST-LINK part and target STM32 part.
The ST-LINK part of the PCB can be cut out to reduce the board size. In this case, the
remaining target STM32 part can only be powered by VIN, E5V, and +3.3V on the ST
morpho connector CN7, or VIN and +3.3V on ARDUINO
to use the ST-LINK part to program the main STM32 using wires between CN4 and SWD
signals available on the ST morpho connector (SWCLK CN7 pin 15 and SWDIO CN7 pin
13).
6.2

Embedded ST-LINK/V2-1

The ST-LINK/V2-1 programming and debugging tool is integrated into the STM32 Nucleo
board.
The ST-LINK/V2-1 makes the STM32 Nucleo boards Mbed Enabled™.
The embedded ST-LINK/V2-1 supports only SWD for STM32 devices. For information about
debugging and programming features, refer to the user manual ST-LINK/V2 in-circuit
debugger/programmer for STM8 and STM32 (UM1075), which describes in details all the
ST-LINK/V2 features.
The changes versus the ST-LINK/V2 version are listed below.
•
New features supported on ST-LINK/V2-1:
–
–
–
–
• Features not supported on ST-LINK/V2-1:
–
–
•
Known limitation:
–
There are two different ways to use the embedded ST-LINK/V2-1 depending on the jumper
states (see
•
Program/debug the on-board STM32
•
Program/debug an MCU in an external application board using a cable connected to
SWD connector CN4
Both CN2 jumpers ON
Both CN2 jumpers OFF
16/68
USB software re-enumeration
Virtual COM port interface on USB
Mass storage interface on USB
USB power management request for more than 100 mA power on USB
SWIM interface
Minimum supported application voltage limited to 3 V
Activating the readout protection on ST-LINK/V2-1 target prevents the target
application from running afterward. The target readout protection must be kept
disabled on ST-LINK/V2-1 boards.
Table 4 and Figure
(Section
Jumper state
6):
(Section 6.2.2)
6.2.4).

Table 4. Jumper states

ST-LINK/V2-1 functions enabled for on-board programming
(default)
ST-LINK/V2-1 functions enabled for external CN4 connector
(SWD supported)
UM1724 Rev 14
®
connector CN6. It is still possible
Description
UM1724