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(6) Pull-up resistor option register 9 (PU9)
After reset: 0000H
Note
PU9 (PU9H
)
(PU9L)
Note When reading from or writing to bits 8 to 15 of the PU9 register in 8-bit or 1-bit units,
specify these bits as bits 0 to 7 of the PU9H register.
Remark The PU9 register can be read or written in 16-bit units.
96
CHAPTER 4 PORT FUNCTIONS
R/W
Address: PU9 FFFFFC52H,
15
14
13
PU915
PU914
PU913
PU97
PU96
0
PU9n
Control of on-chip pull-up resistor connection (n = 0, 1, 6 to 9, 13 to 15)
0
Not connected
1
Connected
However, when the higher 8 bits and the lower 8 bits of the PU9 register are used as
the PU9H register and as the PU9L register, respectively, these registers can be read
or written in 8-bit or 1-bit units.
User's Manual U16896EJ2V0UD
PU9L FFFFFC52H, PU9H FFFFFC53H
12
11
10
0
0
0
0
0
0
9
8
PU99
PU98
PU91
PU90
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