CY8CKIT-046 PSoC® 4 L-Series Pioneer Kit Guide, Doc. #: 002-03344 Rev. *D
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Appendix
The current consumption of the PSoC 4200L device can be measured using the following methods:
1. When the board is powered through the USB Mini-B connector (J10 or J11), remove jumper J14
and connect an ammeter between terminals 3 and 4, as shown in
.
Figure A-5. Current Measurement when Powered from USB Connector
2. When the board is powered from an external voltage supply, remove the USB cable from J10 or
J11. Connect the positive terminal of the external voltage supply to the positive terminal of the
ammeter and the negative terminal of the ammeter to pin 4 of J14. Connect the negative terminal
of the external voltage supply to a GND pin on the board.
shows the required connec-
tions.
Note that this powers the PSoC 4200L device directly. Using this method, you can operate the
PSoC 4200L device over its complete VDD range (1.8 V to 5.5 V). However, it is not recom-
mended to go below 3.3 V because other peripherals on the board are not designed to operate
below 3.3 V.
Figure A-6. Current Measurement when Powered from External Source
Note that the board includes multiple pull-up resistors and level translators interfacing PSoC 4200L
to external peripherals such as F-RAM, codec, and I2C slaves. As a result, removing the power
jumper can potentially back power PSoC 4200L through the device I/Os interfacing these pull-ups
VOLTAGE SOURCE
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+
