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3 switches – Renesas MCU Board for PC4400 Emulator System M34282T5-OPT User Manual

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4.3 Switches

Figure 4.2 shows the locations of switches of the M34282T5-OPT and Tables 4.2 and 4.3 list the
functions of each switch and its factory-settings.

Figure 4.2 Switch locations

Table 4.2 Functions of switches (1/2)

Description

Factory-setting

Switch setting

Switch

SW1

SW2

SW3

SW4

OFF

ON

L

H

H

H

L

CPUSEL1

OFF

ON

OFF

H

H

Does not output the V

DD

from the

M34282T5-OPT to the target system.

Outputs the V

DD

from the M34282T5-

OPT to the target system.

Sets the ROM type of MCU.

For M1: "L"
For M2: "H"

This switch is not used.
Do not change the CPUSEL1 setting.

The pulldown resistors of ports G

0

and G

1

are OFF.

The pulldown resistors of ports G

0

and G

1

are ON.

OFF

ON

OFF

ON

OFF

H

L

CPUSE0

H

L

CPUEL0

ON

OFF

VDD

ON

OFF

VDD