STM32F372VB datasheet(105/128 Pages) STMICROELECTRONICS

105 / 128 page

STM32F37x

Electrical characteristics

Doc ID 022691 Rev 3

105/128

6.3.23

USB characteristics

Table 71.

USB startup time

Symbol

Parameter

Max

Unit

tSTARTUP

(1)

Guaranteed by design, not tested in production.

USB transceiver startup time

µs

Table 72.

USB DC electrical characteristics

Symbol

Parameter

Conditions

Min.(1)

All the voltages are measured from the local ground potential.

Max.(1)

Unit

Input levels

VDD

USB operating voltage(2)

To be compliant with the USB 2.0 full-speed electrical specification, the USB_DP (D+) pin should be pulled

up with a 1.5 k

 resistor to a 3.0-to-3.6 V voltage range.

3.0(3)

The STM32F3xxx USB functionality is ensured down to 2.7 V but not the full USB electrical characteristics

which are degraded in the 2.7-to-3.0 V VDD voltage range.

3.6

VDI

(4)

Guaranteed by design, not tested in production.

Differential input sensitivity (for

USB compliance)

I(USB_DP, USB_DM)

0.2

VCM

(4)

Differential common mode range

Includes VDI range

0.8

2.5

VSE

(4)

Single ended receiver threshold

1.3

2.0

Output levels

VOL

Static output level low

RL of 1.5 k to 3.6 V

(5)

RL is the load connected on the USB drivers

0.3

VOH

Static output level high

RL of 15 k to VSS

(5)

2.8

3.6

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