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(d) Pull-up resistor option register CS (PUCS)
This is an 8-bit register used to set whether to use an on-chip pull-up resistor.
This register can be read and written in 8-bit or 1-bit units.
Symbol
PUCS
R/W
(e) Pull-down resistor option register CS (PDCS)
This is an 8-bit register used to set whether to use an on-chip pull-down resistor.
This register can be read and written in 8-bit or 1-bit units.
Symbol
PDCS
R/W
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Chapter 4 Port Functions
Figure 4-59: Pull-up Resistor Option Register CS (PUCS) Format
7
6
5
4
0
0
0
0
R/W
R/W
R/W
R/W
PUCSn
Connection of a pull-up resistor control (n = 0, 1)
0
Not connected
1
Connected
Figure 4-60: Pull-down Resistor Option Register CS (PDCS) Format
7
6
5
4
0
0
0
0
R/W
R/W
R/W
R/W
PDCSn
Connection of a pull-down resistor control (n = 0, 1)
0
Not connected
1
Connected
User's Manual U16702EE3V2UD00
3
2
1
0
0
PUCS1
PUCS0 FFFFFA48H
R/W
R/W
R/W
R/W
3
2
1
0
0
PDCS1
PDCS0 FFFFFA68H
R/W
R/W
R/W
R/W
0
Address
After reset
00H
0
Address
After reset
00H
161
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