Renesas H8S/2111B 用户手册
Rev. 1.00, 05/04, page 132 of 544
7.12
Ports C, D
Port C and port D are two sets of 8-bit I/O ports. Port C and port D have the following registers.
• Port C data direction register (PCDDR)
• Port C output data register (PCODR)
• Port C input data register (PCPIN)
• Port C Nch-OD control register (PCNOCR)
• Port D data direction register (PDDDR)
• Port D output data register (PDODR)
• Port D input data register (PDPIN)
• Port D Nch-OD control register (PDNOCR)
• Port C output data register (PCODR)
• Port C input data register (PCPIN)
• Port C Nch-OD control register (PCNOCR)
• Port D data direction register (PDDDR)
• Port D output data register (PDODR)
• Port D input data register (PDPIN)
• Port D Nch-OD control register (PDNOCR)
7.12.1
Port C and Port D Data Direction Registers (PCDDR, PDDDR)
PCDDR and PDDDR select input or output for the pins of port C and port D on a bit-by-bit basis.
Bit Bit
Name
Initial
Value
Value
R/W Description
7 PC7DDR
0
W
6 PC6DDR
0
W
5 PC5DDR
0
W
4 PC4DDR
0
W
3 PC3DDR
0
W
2 PC2DDR
0
W
1 PC1DDR
0
W
0 PC0DDR
0
W
0: Port C pin is an input pin
1: Port C pin is an output pin
PCDDR has the same address as PCPIN, and if read,
the port C pin states will be returned.
the port C pin states will be returned.
Bit Bit
Name
Initial
Value R/W
Value R/W
Description
7 PD7DDR
0
W
6 PD6DDR
0
W
5 PD5DDR
0
W
4 PD4DDR
0
W
3 PD3DDR
0
W
2 PD2DDR
0
W
1 PD1DDR
0
W
0 PD0DDR
0
W
0: Port D pin is an input pin
1: Port D pin is an output pin
PDDDR has the same address as PDPIN, and if read,
the port D pin states will be returned.
the port D pin states will be returned.