OLIMEX© 2015
A13-SOM user's manual
The recommended way of powering the board is via A13-SOM-WIFI.
More information about the powering can be found in chapter “5.3 Power supply circuit” of this
manual.
6.4 GPIO connectors
There are 3 female GPIO connectors all located on the top side of A13-SOM. They ease the access
to processors pins. These connectors also provide a way to mount the board to a board with
peripherals like A13-SOM-WIFI. The first of the GPIO connectors is a 40-pin one and the other two
are 10-pin ones.
Below you would find a general overview of the board's GPIO and LCD pins. They might be also
found in the tables further down in the chapter. To understand better what each processor pin does it
might be a good idea to refer to the datasheet of the A13 processor. The schematic of the board of
peripherals A13-SOM-WIFI might also help you identify the main function of the pins.
To keep the form factor as small as possible the GPIO connectors have 0.05'' step.
IMPORTANT: the connectors are very fragile – if you attempt to disconnect the board by pulling
only one side out it might break! Furthermore – you might bend the board's pins! Use pliers or other
suitable object to disconnect the connectors carefully!
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