ST X-NUCLEO-USBPDM1, User Manual

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5 NUCLEO-G474RE Type-C powered mode Sink contract negotiation
In this case, dead battery clamps are removed when 3.3 V jumper is connected (not in low power mode).
NUCLEO-G474RE must be powered by ST-LINK micro-USB connector (JP5 5V_STLK jumper closed).
Step 1. Connect the NUCLEO-G474RE micro-USB connector (CN1) to your PC.
NUCLEO-G474RE appears as a virtual disk (NODE_G474RB).
Step 2. To program the STM32G474RE , drag and drop the binary file corresponding to the required voltage
(
G474RE_TCPP01_no-low-power_no-DB-mng_SNK_xxV_v1.bin, xx
is the selected voltage) to
the virtual disk.
LD1 blinks red and green for few seconds. When it does not blink any more, programming is complete.
Step 3. Plug the X-NUCLEO-USBPDM1 expansion board on top of the NUCLEO-G474RE development board.
Step 4. On X-NUCLEO-USBPDM1 JP1, close CC1_G4 and CC2_G4 , and leave the other jumpers open.
Step 5. On X-NUCLEO-USBPDM1 JP2, close Vcc–3.3 V and DB–3.3V and leave the other jumpers open.
X-NUCLEO-USBPDM1 CN1 (USB Type-C receptacle) can be connected to any Type-C source. The X-
CUBE-USBPDM1 selects the highest and closest power profile to the value indicated by the binary file
from available power profiles on the source. The obtained voltage can be measured on X-NUCLEO-
USBPDM1 CN2.
Step 6. Disconnect the micro-USB cable from NUCLEO-G474RE CN1 and the USB Type-C cable from X-
NUCLEO-USBPDM1 CN1.
Step 7. Remove the power supply from NUCLEO-G474RE (JP5 fully open).
Step 8. On X-NUCLEO-USBPDM1 JP2, close LDO OUT 3.3 V , 3.3 V–NRST , Vcc–3.3 V and DB – 3.3 V and
leave the other jumpers open.
As previously mentioned,
X-NUCLEO-USBPDM1 CN1 (USB Type-C receptacle) can be connected to
any Type-C source. The X-CUBE-USBPDM1 selects the highest and closest power profile to the value
indicated by the binary file from available power profiles on the source. STM32G474RE is then
powered by Type-C connector and X-NUCLEO-USBPDM1 can be fine tuned with V
BUS
OVP voltage
selection thanks to R0 position change. This configuration is relevant for a Type-C powered device
without battery as it is not in low power mode (Vcc is directly connected to 3.3 V). The data lines of
Type-C connector CN1 are connected to the
STM32G474RE USB 2.0 full-speed transceiver thanks to
R8 and R9 zero Ohm resistors.
UM2668
NUCLEO-G474RE Type-C powered mode Sink contract negotiation
UM2668 - Rev 2
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