Hardware layout and configuration UM1907
12/49 DocID027942 Rev 3
6.1.2 ST-LINK/V2-1 firmware upgrade
The ST-LINK/V2-1 embeds a firmware upgrade mechanism for in-situ upgrade through the
USB port. As the firmware may evolve during the life time of the ST-LINK/V2-1 product (for
example new functionality, bug fixes, support for new microcontroller families), it is
recommended to visit www.st.com before starting to use the STM32F746G-DISCO board
and periodically, in order to stay up-to-date with the latest firmware version.
6.2 Power supply
The STM32F746G-DISCO discovery board is designed to be powered by 5V DC power
supply. It is possible to configure the discovery board to use any of the following five sources
for the power supply:
• 5V DC power adapter connected to JP2 (external power supply on silkscreen of JP1
(5V ext)). In this case, the STM32F746G-DISCO discovery board must be powered by
a power supply unit or by an auxiliary equipment complying with the standard
EN-60950-1: 2006+A11/2009, and must be Safety Extra Low Voltage (SELV) with
limited power capability.
Figure 7. JP1 (5V ext) from JP2 (5V)
• 7-12V DC power from CN6 pin named Vin on silkscreen, the extension connectors for
Arduino UNO shields or daughterboard (external power source on silkscreen of JP1
(5V ext)).
Figure 8. JP1 (5V ext) from CN6 (Vin)
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