Renesas MCU Board for PC4504 Emulator System M34570T-MCU - Manual (Page 17)

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Table 4.2 Functions of switches
4.3 Description of Switches
The M34570T-MCU board has three switches. Figure 4.2 shows the positions of these switches.
Tables 4.2 list the functions of the switches. Shown in Table 4.2 is the preset switch positions that
are set before the MCU board is shipped from the factory.
Figure 4.2 Positions of switches
3V
Connects the V
DD
of the M34570T-MCU to the V
DD
of the target system.
Set the MCU’s ROM size.
• Set "4" (M4)
• Set "8" (M8)
• Set "D" (MD)
Operates the target MCU at +5V.
Operates the target MCU at +3V.
Does not connect the V
DD
of the M34570T-MCU to
the V
DD
of the target system.
8
SW1
SW2
SW3
OFF
ON
5V
OFF
5V
Label Switch position Description Factory-setting
ROMSIZE
OFF
OFF
ON
ON
5V
5V
3V
3V