CY8CKIT-014 PSoC 5 FirstTouch Starter Kit Guide, Spec. # 001-57708 Rev. **
35
Technical Reference
5.1.1
Hardware Jumpers
There are two jumpers on the PCB for setting the power configuration. They are J1 and J4. These
jumpers are for selecting the source for powering the PSoC 5. The options are to power the PSoC 5
from the on board 3.3V regulator, to run the PSoC 5 from the USB connector, or to supply power
from off board using the J2/J3 connectors.
J4 is for selecting the power source to drive the 3.3 volt regulator. This regulator can be used to
power everything on the board or just the accelerometer. The regulator cannot be powered indepen-
dently from the VDDIO bus. It must either power the VDDIO bus or be powered by it.
J1 is for selecting the power source of the PSoC 5. The I/O cells of the PSoC 5 are driven by this
source level. Only the I/O cells that the accelerometer is connected to remain connected to 3.3V and
must power up with the VDDIO bus or after the VDDIO power bus.
Valid combinations of the jumpers are:
■
3.3V operation
❐
J1-2 to J1-3
❐
J4-2 to J4-3
■
VBUS operation
❐
J1-1 to J1-2
❐
J4-1 to J4-2
■
VDDIO
❐
J1 open
❐
J4-1 to J4-2
Содержание PSoC 5 FIRSTTOUCH CY8CKIT-014
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