Datasheet

Application block diagrams STM32F405xx, STM32F407xx
172/185 DocID022152 Rev 4
Figure 88. USB controller configured in dual mode and used in full speed mode
1. External voltage regulator only needed when building a V
BUS
powered device.
2. The current limiter is required only if the application has to support a V
BUS
powered device. A basic power
switch can be used if 5 V are available on the application board.
3. The ID pin is required in dual role only.
4. The same application can be developed using the OTG HS in FS mode to achieve enhanced performance
thanks to the large Rx/Tx FIFO and to a dedicated DMA controller.
STM32F4xx
V
DD
VBUS
DP
V
SS
PA9/PB13
PA12/PB15
PA11/PB14
USB micro-AB connector
DM
GPIO+IRQ
GPIO
EN
Overcurrent
5 V Pwr
5 V to V
DD
voltage regulator
(1)
V
DD
ID
(3)
PA10/PB12
OSC_IN
OSC_OUT
MS19002V3
Current limiter
power switch
(2)