Datasheet

DocID15274 Rev 10 71/108
STM32F105xx, STM32F107xx Electrical characteristics
107
USB OTG FS characteristics
The USB OTG interface is USB-IF certified (Full-Speed).
Figure 30. USB OTG FS timings: definition of data signal rise and fall time
Table 45. 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 46. 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 STM32F105xx and STM32F107xx USB OTG FS functionality is ensured down to 2.7 V but not the full
USB OTG FS electrical characteristics which are degraded in the 2.7-to-3.0 V V
DD
voltage range.
- 3.6 V
V
DI
(3)
3. Guaranteed by design, not tested in production.
Differential input sensitivity I(USBDP, USBDM) 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
Pull-down resistance on
PA11, PA12
V
IN
= V
DD
17 21 24
kΩ
Pull-down resistance on
PA9
0.65 1.1 2.0
R
PU
Pull-up resistance on PA12 V
IN
= V
SS
1.5 1.8 2.1
Pull-up resistance on PA9 V
IN
= V
SS
0.25 0.37 0.55
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