STM32F407IG datasheet(104/154 Pages) STMICROELECTRONICS

104 / 154 page

Electrical characteristics

STM32F405xx, STM32F407xx

104/154

Doc ID 022152 Rev 1

USB HS characteristics

Table 57 shows the USB HS operating voltage.

Figure 37.

ULPI timing diagram

Table 57.

USB HS DC electrical characteristics

Symbol

Parameter

Min.(1)

All the voltages are measured from the local ground potential.

Max.(1)

Unit

Input level

VDD

Ethernet operating voltage

2.7

3.6

Table 58.

USB HS clock timing parameters(1)

Guaranteed by design, not tested in production.

Parameter

Symbol

Min

Nominal

Max

Unit

fHCLK value to guarantee proper operation of

USB HS interface

TBD

MHz

Frequency (first transition)

8-bit ±10%

FSTART_8BIT

MHz

Frequency (steady state) ±500 ppm

FSTEADY

59.97

60.03

MHz

Duty cycle (first transition)

8-bit ±10%

DSTART_8BIT

Duty cycle (steady state) ±500 ppm

DSTEADY

49.975

50.025

Time to reach the steady state frequency and

duty cycle after the first transition

TSTEADY

1.4

Clock startup time after the

de-assertion of SuspendM

Peripheral

TSTART_DEV

5.6

Host

TSTART_HOST

PHY preparation time after the first transition

of the input clock

TPREP

µs

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