STM32F412RG datasheet(135/193 Pages) STMICROELECTRONICS

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STM32F412xE/G

Electrical characteristics

161

Note:

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

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

sensing block (current to voltage conversion to determine the different sessions) can be

observed on PA9 when the feature is enabled.

Figure 45. USB OTG FS timings: definition of data signal rise and fall time

CAN (controller area network) interface

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

function characteristics (CANx_TX and CANx_RX).

2. The USB OTG FS 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, not tested in production.

4. RL is the load connected on the USB OTG FS drivers.

Table 70. USB OTG FS electrical characteristics(1)

1. Guaranteed by design, not tested in production.

Driver characteristics

Symbol

Parameter

Conditions

Min

Max

Unit

Rise time(2)

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

Chapter 7 (version 2.0).

CL = 50 pF

420

Fall time(2)

CL = 50 pF

trfm

Rise/ fall time matching

tr/tf

110

VCRS

Output signal crossover voltage

1.3

2.0

ai14137

Differen tial

Data Lines

VSS

VCRS

Crossover

points

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