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7 Appendix
7.1.4 Power Source Supply Selector
Specifications of the Power Source Supply Selector (S1: Power Mode) are shown in Table
7-1.
Table 7-1 Jumper Settings
Switch No.
Default State Function
S1
USB
(BUSPWRD)
Selects the power supply for the Target MCU.
USB (BUSPWRD):
The power is supplied from the USB Monitor Board.
TARGET (TRGTPWRD):
The power is supplied from the
Target Board.
Note: The USB Monitor Board supplies a 5 V power. If a 3.3 V power supply is needed,
choose to supply the power from the
Target Board.
7.1.5 LED Status Indicators
The LED status indicators on the USB Monitor Board are listed in the table below.
LED No. Color Function
STOP Red When steadily on, the Target MCU is idle.
RUN Green When steadily on, the Target MCU is running.
STATUS Yellow When flashing (normal), the USB Monitor is normal.
When flashing (fast), the USB Monitor is operating
erratically. (Note)
POWER Red When steadily on, the Target MCU is being supplied
with power.
Note: If this LED flashes fast, the USB Monitor Board may have gone wild. In such a case, see
Section [6. Troubleshooting].
87