Datasheet

DocID025644 Rev 3 105/135
STM32F401xD STM32F401xE Electrical characteristics
114
USB OTG full speed (FS) characteristics
This interface is present in USB OTG FS controller.
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.
Table 63. USB OTG FS startup time
Symbol Parameter Max Unit
t
STARTUP
(1)
1. Guaranteed by design, not tested in production.
USB OTG FS transceiver startup time 1 µs
Table 64. USB OTG FS DC electrical characteristics
Symbol Parameter Conditions Min.
(1)
1. All the voltages are measured from the local ground potential.
Typ. Max.
(1)
Unit
Input
levels
V
DD
USB OTG FS operating
voltage
3.0
(2)
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 V
DD
voltage range.
-3.6V
V
DI
(3)
3. Guaranteed by design, not tested in production.
Differential input sensitivity I(USB_FS_DP/DM) 0.2 - -
V
V
CM
(3)
Differential common mode
range
Includes V
DI
range 0.8 - 2.5
V
SE
(3)
Single ended receiver
threshold
1.3 - 2.0
Output
levels
V
OL
Static output level low R
L
of 1.5 kΩ to 3.6 V
(4)
4.
R
L
is the load connected on the USB OTG FS drivers.
--0.3
V
V
OH
Static output level high R
L
of 15 kΩ to V
SS
(4)
2.8 - 3.6
R
PD
PA11, PA12
(USB_FS_DM/DP)
V
IN
= V
DD
17 21 24
kΩ
PA9 (OTG_FS_VBUS) 0.65 1.1 2.0
R
PU
PA11, PA12
(USB_FS_DM/DP)
V
IN
= V
SS
1.5 1.8 2.1
PA9 (OTG_FS_VBUS) V
IN
= V
SS
0.25 0.37 0.55
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