ST STM32H5 User Manual

10.6
USB Type-C
®
FS
The STM32H5 Nucleo-144 board supports USB full-speed (FS) communication. The USB connector (CN13) is a
USB Type-C
®
connector.
The STM32H5 Nucleo-144 board supports the USB Type-C
®
Sink mode only.
A green LED (LD7) lights up when V
BUS
is powered by a USB Host and the NUCLEO-H563ZI board works as a
USB Device.
10.6.1 USB FS device
When a USB Host connection to the USB Type-C
®
connector (CN13) of the STM32H5 Nucleo-144 board is
detected, the board starts behaving as a USB Device.
Depending on the powering capability of the USB Host, the board can take power from the V
BUS
terminal of
CN13. In the board schematic diagrams, the corresponding power voltage line is called 5V_UCPD. The
STM32H5
Nucleo-144 board supports a 5 V USB voltage, from 4.75 to 5.25 V. On the MCU side, VDD_USB supports the
3V3 voltage only. Section 8 provides information on how to use powering options. The hardware configuration for
the USB FS interface is shown in Table 14.
Table 14. Hardware configuration for the USB interface
Pin
name
Function Solder bridge
State
(1)
Description
PA11 USB_FS_N SB21
ON
PA11 can be used as a GPIO on the ST morpho connector (CN12).
USB function can be used also but performance is degraded due to
track length and impedance mismatch.
OFF PA11 used as USB_FS_N signal
PA12 USB_FS_P SB22
ON
PA12 can be used as a GPIO on the ST morpho connector (CN12).
USB function can be used also but performance might be degraded
due to track length and impedance mismatch.
OFF PA12 used as USB_FS_P signal
1. The default configuration is in bold.
10.6.2 UCPD
The USB Type-C
®
introduces the USB power-delivery feature. The STM32H5 Nucleo-144 supports the dead
battery and the Sink mode.
In addition to the DP/DM I/O directly connected to the USB Type-C
®
connector, five I/Os are also used for UCPD
configuration: Configuration channel (UCPD_CC1 and UCPD_CC2), VBUS-SENSE, UCPD dead battery
(UCPD_DBn), and UCPD_FLT (FAULT) feature.
To protect the STM32H5 Nucleo-144 from USB overvoltage, a Programmable Power Supply (PPS) compliant
USB Type-C
®
port protection is used: TCPP01‑M12 IEC6100‑4‑2 level 4‑compliant IC:
• Configuration Channel I/O: UCPD_CCx: These signals are connected to the associated CCx line of the
USB Type-C
®
connector through the STM USB port protection TCPP01-M12. These lines are used for the
configuration channel lines (CCx) to select the
USB Type-C
®
current mode. The STM32H5 Nucleo-144
supports only Sink current mode.
• Dead battery I/O: UCPD_DBn: This signal is connected to the associated DBn line of the TCPP01-M12.
The STM USB port protection TCPP01-M12 internally manages the dead battery resistors.
• V
BUS
fault detection: UCPD_FLT: This signal is provided by the ST USB Type-C
®
port protection. It is used
as a fault reporting to the MCU after a bad V
BUS
level detection. By design, the STM32H5 Nucleo-144
V
BUS
protection is set to 6 V maximum. (R56 is set to 2.4 kΩ to select 6 V maximum).
UM3115
USB Type-C® FS
UM3115 - Rev 2
page 22/44

ST STM32H5 Specifications

General

Brand	ST
Model	STM32H5
Category	Motherboard
Language	English