STM32G0B1CEU6 datasheet(123/159 Pages) STMICROELECTRONICS

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DS13560 Rev 2

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STM32G0B1xB/xC/xE

Electrical characteristics

124

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 36. USB timings – definition of data signal rise and fall time

ai14137b

Cross over

points

Differential

data lines

VCRS

VSS

Table 79. USB electrical characteristics(1)

Driver characteristics

Symbol

Parameter

Conditions

Min

Max

Unit

trLS

Rise time in LS(2)

CL = 200 to 600 pF

300

tfLS

Fall time in LS(2)

CL = 200 to 600 pF

300

trfmLS

Rise/ fall time matching in LS

tr/tf

125

trFS

Rise time in FS(2)

CL = 50 pF

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)

Driving high or low

Ω

1. Guaranteed by design.

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

Specification - Chapter 7 (version 2.0).

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.

Table 80. USB BCD DC electrical characteristics(1)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

IDD(USBBCD)

Primary detection mode

consumption

300

μA

Secondary detection mode

consumption

300

μA

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