STM32H7 datasheet(315/357 Pages) STMICROELECTRONICS

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DS12110 Rev 10

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STM32H742xI/G STM32H743xI/G

Electrical characteristics (rev V)

320

USB OTG_FS characteristics

The USB interface is fully compliant with the USB specification version 2.0 and is USB-IF

certified (for Full-speed device operation).

USB OTG_HS characteristics

Unless otherwise specified, the parameters given in Table 212 for ULPI are derived from

tests performed under the ambient temperature, fPCLKx frequency and VDD supply voltage

summarized in Table 122: General operating conditions, with the following configuration:

•

Output speed is set to OSPEEDRy[1:0] = 11

•

Capacitive load CL=20 pF

•

Measurement points are done at CMOS levels: 0.5VDD

•

IO Compensation cell activated.

•

VOS level set to VOS1

Refer to Section 7.3.15: I/O port characteristics for more details on the input/output

characteristics.

Table 211. USB OTG_FS electrical characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

VDD33USB

USB transceiver operating

voltage

-3.0(1)

1. The USB functionality is ensured down to 2.7 V but not the full USB electrical characteristics which are

degraded in the 2.7 to 3.0 V voltage range.

-3.6

RPUI

Embedded USB_DP pull-up

value during idle

900

1250

1600

Ω

RPUR

Embedded USB_DP pull-up

value during reception

1400

2300

3200

ZDRV

Output driver impedance(2)

2. No external termination series resistors are required on USB_DP (D+) and USB_DM (D-); the matching

impedance is already included in the embedded driver.

Driver high

and low

Table 212. Dynamics characteristics: USB ULPI(1)

Symbol

Parameter

Condition

Min

Typ Max Unit

tSC

Control in (ULPI_DIR, ULPI_NXT) setup

time

-2.5

-4.5(2)

tHC

Control in (ULPI_DIR, ULPI_NXT) hold

time

-2

tSD

Data in setup time

2.5

tHD

Data in hold time

tDC/tDD

Control/Datal output delay

2.7<VDD<3.6 V

CL=20 pF

-9

9.5

1.71<VDD<3.6 V

CL=15 pF

-9

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