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OLIMEX© 2016
7
PC2/SPI2_MISO
8
PC3/SPI2_MOSI
9
PB10/SPI2_SCK/UART3_TX
10
RB7/UEXT_CS
6.4 USB HOST
The big advantage of having USB hosts available over USB devices is that you can as well use
them as masters. A USB host may implement multiple host controllers and each host controller may
provide one or more USB ports.
Note DFU bootloader uses the host USB port, and a "USB A-A" cable is required.
The signals follow the familiar and standard USB host pattern:
USB 2-level host
PIN#
SIGNAL NAME
1
+5V_HOST_PWR
2
USB_HOST_D-
3
USB_HOST_D+
4
GND
6.5 USB_OTG
USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as
digital audio players or mobile phonesto 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.
Pin #
Signal Name
1
+5V_OTG_PWR
2
USB_OTG_D-
3
USB_OTG_D+
4
PB12/OTG_HS_ID
5
GND
6.6 Arduino platform
The Arduino/Maple platform connectors (2×6 pin and 2×8 pin plastic headers) are not mounted but
are included in the package. The reasons for not mounting the headers on the pin holes are two: first
you might not need them if you do not wish to experiment with Arduino/Maple software; second
there are two rows depending on the shield you might want to use the difference between the two
rows is the distance between the two digital rows one is made according to the Arduino shield
PC2
PC3
PB10
PB7
Page 16 of 30
STM32-H407 user's manual
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