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6.2. Measuring Power with Varying VDD
To measure power with a varying VDD:
1. Connect a USB Debug Adapter to the 10-pin shrouded debug connector (H8).
2. Remove the shorting blocks from the COM port pins (JP1 and JP2) and the potentiometer (JP5).
3. Remove the JP3 power measurement shorting block.
4. Connect a multimeter across (positive side on the bottom pin) the JP3 header.
5. Remove the J1 shorting block.
6. Move the VDD Select switch (SW1) to the upper VREG position.
7. Connect a power supply to VREG on the J1 header (middle).
8. Download the code to the board.
9. Measure the power of the device.
Note: The pull-up resistor on /RST is powered by the VDD net, which is separated from the VDD_MCU net with the power
measurement shorting block (JP3) removed. Powering the MCU using VDD_MCU without powering the VDD net may
prevent Simplicity Studio from communicating with the MCU.
Figure 8. C8051F970 Power Measurement Configuration—Varying VDD
7. Known Board Issues
There are no known issues with Revision 2.0 of the C8051F970 target board.
C8051F970DK-UG
Rev. 0.1
15
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