h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 244

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 I/O Ports
9.9
Port C is an 8-bit I/O port. Port C also functions as LCD driver output pins and as address bus
outputs. The pin functions are determined by the operating mode.
Port C has a built-in MOS input pull-up function that can be controlled by software.
• Port C data direction register (PCDDR)
• Port C data register (PCDR)
• Port C register (PORTC)
• Port C pull-up MOS control register (PCPCR)
• Port C open-drain control register (PCODR)
9.9.1
PCDDR is a write-only register, the individual bits of which specify input or output for the pins of
port C. PCDDR cannot be read; if it is, an undefined value will be read.
Rev. 2.00 Dec. 05, 2005 Page 206 of 724
REJ09B0200-0200
Bit
7
6
5
4
3
2
1
0
Port C
Port C Data Direction Register (PCDDR)
Bit Name
PC7DDR
PC6DDR
PC5DDR
PC4DDR
PC3DDR
PC2DDR
PC1DDR
PC0DDR
Initial
Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
Setting a PCDDR bit to 1 makes the corresponding port
C pin an output pin, while clearing the bit to 0 makes
the pin an input pin.