OLIMEX© 2018
STM32-E407 user's manual
6.4 USB_OTG1
USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as
digital audio players or mobile phones to act as a host allowing a USB flash drive, mouse, or
keyboard to be attached and also connecting USB peripherals directly for communication purposes
among them.
Note DFU bootloader uses the USB_OTG1 port, and a "USB micro-A" cable is required. This is the
port used to program the board via Arduino IDE.
Note that the USB-OTG ESD protection ICs are not placed by default. However, there are pads
provided for such protection.
Pin #
Signal Name
1
+5V_OTG1_PWR
2
USB_OTG1_D-
3
USB
4
PA10/OTG1_FS_ID
5
GND
6.5 USB_OTG2
USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as
digital audio players or mobile phones to act as a host allowing a USB flash drive, mouse, or
keyboard to be attached and also connecting USB peripherals directly for communication purposes
among them.
Note that the USB-OTG ESD protection ICs are not placed by default. However, there are pads
provided for such protection.
Pin #
Signal name
1
+5V_OTG2_PWR
2
USB_OTG2_D-
3
USB
4
PB12/OTG2_HS_ID
5
GND
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