The two CN8 and CN9 extension connector headers, placed on both hand sides of the board, are 32-pin 2.54 mm
pitch standard connectors. Connector spacing is (17 x 2.54) 43.18 mm. They offer easy access to signal pins on
the bottom and top sides of the Discovery Board.
Thus, the B-G474E-DPOW1 product is compatible with standard breadboards for prototyping. To allow a
complete board connection, the CN5, CN6, CN11, CN12 GND corner headers, and the CN7 VOUT/GND
connector are also compatible with the 2.54 mm pitch grid. Refer to
Figure 6. B-G474E-DPOW1 mechanical
for details.
Figure 20.
CN8 and CN9 extension connectors
CN9 extension
connector (top)
CN8 extension
connector (top)
All the power supplies and all the PIOs from the STM32G474RET6 microcontroller are available on these
extension connectors. Analogue and general grounds are also available.
Furthermore, to ease prototyping, 5V_OUT and 3V_OUT power supplies, coming respectively from the general
5V and the 3V3 of the Discovery board, are also available on the CN8 and CN9 extension connectors. Pay
attention that the currents drawn on the 5V_OUT and 3V3_OUT power supplies are not exceeding maximum
recommended values. Refer to
for details.
A 5V_IN pin is available to power the Discovery board from an external power supply. Refer to
UM2577
Extension connector headers
UM2577
-
Rev 2
page 31/54
