D E M O A C U S E R G U I D E
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Figure 2: PWR Jack
2.1mm, center-positive, +V input
Applied voltage: +7V to +18V
PWR
A voltage regulator pr5V to the target MCU and board circuitry. The regulator pro-
vides a maximum of 500 mA. The regulator is over-current and over-temperature protected to
prevent damage during fault conditions.
BDM Power
The integrated USB BDM is configured to provide power to the target device and connected
circuitry. After the BDM enumerates on the USB bus, the BDM will provide up to 350 mA to
the board. Excessive current drain will violate the USB specification and cause de-enumerate
the BDM. This will disconnect power to the board and cause a target reset.
CAUTION: Violating the USB specification will cause the USB bus to disconnect forcing the
target to reset. Damage to the board or host PC may result.
Power Switch – PWRSW
The PWRSW easily connects and disconnects input voltage to the board. The silkscreen
clearly marks the ON and OFF positions. This switch controls all voltage levels on the board.
Voltage Indicators
A +5V LED indicates the board is powered.
PWR_SEL Option Header
The PWR_SEL option header selects the source of input power to the EVB. The board may
be powered from a voltage source connected to either the POWER connector or the integrated
USB BDM. The BDM can provide up to 350 mA of current to the EVB.
