STM32H7B3AI datasheet(181/238 Pages) STMICROELECTRONICS

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•

Measurement points are done at CMOS levels: 0.5VDD

•

IO Compensation cell activated.

•

VOS level set to VOS0

Refer to Section 6.3.16 I/O port characteristics for more details on the input/output characteristics.

Table 124. Dynamics characteristics: USB OTG_FS

Symbol

Parameter

Condition

Min

Typ

Max

Unit

VDD33USB

USB transceiver operating voltage

3.0(1)

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)

Driver high and low

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

3.0 V voltage range.

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.

6.3.36.9

USB OTG_HS characteristics

Unless otherwise specified, the parameters given in Table 125 for ULPI are derived from tests performed under

the ambient temperature, fPCLKx frequency and VDD supply voltage summarized in Table 22. General operating

conditions and Section 6.3.1 , 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 VOS0

Note:

At VOS1, the performance can be degraded by up to 5 % compared to VOS0. This is indicated by a footnote

when applicable.

Refer to Section 6.3.16 I/O port characteristics for more details on the input/output characteristics.

Table 125. Dynamics characteristics: USB ULPI

Symbol

Parameter

Condition

Min(1) Typ(1) Max(1)(2)(3) Unit

tSC

Control in (ULPI_DIR , ULPI_NXT) setup time

3.5

tHC

Control in (ULPI_DIR, ULPI_NXT) hold time

tSD

Data in setup time

tHD

Data in hold time

tDC/tDD

Control/Datal output delay

2.7 < VDD < 3.6 V, CL=20 pF

8.5

1.71 < VDD < 3.6 V, CL=15 pF

1. Guaranteed by characterization results.

2. At VOS1, these values are degraded by up to 5 %.

3. For external ULPI transceivers operating at 1.8 V, check carefully the timing values for compatibility.

STM32H7B3xI

Operating conditions

DS13139 - Rev 8

page 181/238

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