Renesas SH7781 用户手册
28. General Purpose I/O Ports (GPIO)
Rev.1.00 Jan. 10, 2008 Page 1441 of 1658
REJ09B0261-0100
28.2.40
Input-Pin Pull-Up Control Register 1 (PPUPR1)
PPUPR1 is a 16-bit readable/writable register that performs the pull-up control for the pin
corresponding to each bit of the register field.
corresponding to each bit of the register field.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
—
—
RDY
PUP
PUP
—
—
—
—
—
—
—
—
—
—
—
—
—
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
Initial value:
R/W:
Bit Bit
Name
Initial
value R/W Description
value R/W Description
15 to 3
—
All 1
R/W
Reserved
These bits are always read as 1, and the write value
should always be 1.
should always be 1.
2
RDYPUP
1
R/W
Controls pull-up of the
RDY pin
0:
RDY pull-up off
1:
RDY pull-up on
1 and 0 —
All 1
R/W
Reserved
These bits are always read as 1, and the write value
should always be 1.
should always be 1.
28.2.41
Input-Pin Pull-Up Control Register 2 (PPUPR2)
PPUPR2 is a 16-bit readable/writable register that performs the pull-up control for the pin
corresponding to each bit of the register field.
corresponding to each bit of the register field.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
IRL2
PUP
PUP
IRL3
PUP
PUP
IRL0
PUP
PUP
IRL1
PUP
PUP
—
—
—
SIOF
UP1
—
NMI
PUP
CLK
PUP
SIOF
UP0
—
—
—
—
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
Initial value:
R/W: