STM32F769AI datasheet(190/255 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F765xx STM32F767xx STM32F768Ax STM32F769xx

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DocID029041 Rev 4

Note:

When VBUS sensing feature is enabled, PA9 and PB13 should be left at their 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 and PB13 when the feature is enabled.

Figure 55. USB OTG full speed timings: definition of data signal rise and fall time

RPD

PA11, PA12, PB14, PB15

(USB_FS_DP/DM,

USB_HS_DP/DM)

VIN = VDD

PA9, PB13

(OTG_FS_VBUS,

OTG_HS_VBUS)

2.4

5.2

RPU

PA12, PB15 (USB_FS_DP,

USB_HS_DP)

VIN = VSS

1.5

1.8

2.1

PA9, PB13

(OTG_FS_VBUS,

OTG_HS_VBUS)

VIN = VSS

0.55

0.95 1.35

1. All the voltages are measured from the local ground potential.

2. The 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 VDDUSB voltage range.

3. Guaranteed by design.

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

Table 91. USB OTG full speed DC electrical characteristics (continued)

Symbol

Parameter

Conditions

Min.

(1)

Typ.

Max.

(1)

Unit

Table 92. USB OTG full speed electrical characteristics(1)

Driver characteristics

Symbol

Parameter

Conditions

Min

Max

Unit

Rise time(2)

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

ZDRV

Output driver impedance(3)

Driving high or

low

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