Freescale Semiconductor Demonstration Board DEMO9S08AC60E - Manual (Page 14)

DEMO9S08AC60E User’s Guide, Rev. 0.1
14 Freescale Semiconductor
1.9 Power
The DEMO9S08AC60E allows the user to power the board in several different
ways.
1.9.1 USB-BDM Interface
The default power option is to power the board through the integrated
USB-BDM interface. To power the board in this manner, simply connect the
supplied USB cable from the USB connector on the DEMO9S08AC60E (J33)
to a USB port on your host computer. LED D1 will light green to let you know
that power has been correctly applied to the board. When powering the board
through the USB-BDM interface, jumpers W1, W2, and W3 should be in their
default position as described below
Table 1-3 Jumper Settings in USB Power Mode
Jumper
Default
Position
Setting Description
W1 2-3 5V
Sets the board for 5V
operation
W2 2-3 USB
Sets the board to be
powered by through the
USB
W3 1-2 P_IO_5V
Outputs 5V on pin 1 of
the I/O connector, J35.
This jumper should be
removed if you do not
want to output 5V on
this pin.
1.9.2 External Power Jack
The DEMO9S08AC60E can also be powered externally through the barrel
connector J1. This connector is a 2.1 mm, center positive connector. Voltage
supplied through this connector should be between positive 7 volts and positive
12 volts DC. To power the board through the external power jack, jumper W2
should be moved to the 1-2, EXT position. LED D1 will light green to let you
know that power has been correctly applied to the board. Jumper settings are
detailed below