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OLIMEX© 2015
AM3352-SOM user's manual
3.3.2 Mounted powering
Typically, AM3352-SOM gets evaluated when mounted atop AM3352-SOM-EVB. In this case the
former is powered via the latter. The power line, altogether with a number of other important
processor lines, is transferred via the 40-pin headers. AM3352-SOM receives power from AM3352-
SOM-EVB, but what are the requirements to power AM3352-SOM-EVB?
You need to provide 6V to 16V DC voltage to the power jack (named PWR) of AM3352-SOM-
EVB board. The DC barrel jack has 2.0mm inner pin and 6.3mm hole. More information about the
exact component might be found here:
https://www.olimex.com/wiki/PWRJACK
For the European customers, we also stock and sell basic power supply adapters compatible with
the power jack.
Do not provide AC voltage to the AM3352-SOM-EVB board! Do not provide more than 16V of
voltage to the AM3352-SOM-EVB board!
The typical consumption of AM3352-SOM-EVB + AM3352-SOM is around 0.20A @ 10V but
might reach peaks up to 0.25A @ 10V during initial boot. These values were measured without
anything else connected to the board (e.g. no keyboard, no mouse, no LCD display, etc).
The board can NOT be powered by a personal computer using the USB_OTG connector.
During operation it is typical for some integrated circuits to appear hotter than others. This is
perfectly normal for some electronic components – for instance – the voltage regulators and the
main processor.
3.4 Button functions
The board comes with two buttons listed bellow:
RST – reset button – used for hardware reset of the board – before using it, please refer to the note
below
NMI – non-masked interrupt button – the button is not used in the default Linux image, however it
is required for some distributions
It is always recommended to perform a software "turn off" of the board or software "reset". Then
you are free to remove the power supply.
If you disconnect the power supply (either the USB or the power jack) before turning off the board
you may corrupt your SD card.
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