STM32L4P5CE datasheet(246/311 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L4P5xx

246/311

DS12903 Rev 2

Note:

When VBUS sensing feature is enabled, PA9 should be left at its default state (floating

input), not as alternate function. A typical 200 μA current consumption of the sensing block

(current to voltage conversion to determine the different sessions) can be observed on PA9

when the feature is enabled.

Figure 47. USB OTG timings – definition of data signal rise and fall time

2. The STM32L45xx USB OTG full speed transceiver functionality is ensured down to 2.7 V but not the full

USB full speed electrical characteristics which are degraded in the 2.7-to-3.0 V VDD voltage range.

3. Guaranteed by design.

4. RL is the load connected on the USB OTG full speed drivers.

Table 99. USB OTG electrical characteristics(1)

1. Guaranteed by design

Driver characteristics

Symbol

Parameter

Conditions

Min

Max

Unit

trLS

Rise time in LS(2)

2. Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB

Specification - Chapter 7 (version 2.0).

CL = 200 to 600 pF

300

tfLS

Fall time in LS(2)

trfmLS

Rise/ fall time matching in LS

tr / tf

125

trFS

Rise time in FS(2)

CL = 50 pF

420

tfFS

Fall time in FS(2)

CL = 50 pF

trfmFS

Rise/ fall time matching in FS

tr / tf

111

VCRS

Output signal crossover voltage

(LS/FS)

-1.3

2.0

ZDRV

Output driver impedance(3)

3. No external termination series resistors are required on DP (D+) and DM (D-) pins since the matching

impedance is included in the embedded driver.

Driving high or low

Ω

ai14137b

Cross over

points

Differential

data lines

VCRS

VSS

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