Renesas Single-Chip Microcomputer M34551T2-MCU - Manual (Page 18)

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Table 4.3 Functions of the switches (2/2)
Factory-setting Description Switch position Label
Does not connect the pullup resistor 68 k Ω to
the port P1
0
.
Connects the pullup resistor 68 k Ω to the port
P1
0
.
Does not connect the pullup resistor 68 k Ω to
the port P1
1
.
Connects the pullup resistor 68 k Ω to the port
P1
1
.
Does not connect the pullup resistor 68 k Ω to
the port P1
2
.
Connects the pullup resistor 68 k Ω to the port
P1
2
.
Does not connect the pullup resistor 68 k Ω to
the port P1
3
.
Connects the pullup resistor 68 k Ω to the port
P1
3
.
Uses the ports D
6
and D
7
.
Uses the sub-clock oscillator circuit.
SW4
SW5
SW6
SW7
SW8
SW9
OFF
ON
OFF
ON
OFF
ON
OFF
ON
551
555
PORT
XC
OFF
OFF
OFF
OFF
PORT
555
Operates the M34551T2-MCU for 4551 group.
Operates the M34551T2-MCU for 4555 group.
PORT XC
PORT XC
555 551
555 551