HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 585

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

10.11
Port C is an 8-bit I/O port that also has other functions. The port C has the following registers.
• Port C data direction register (PCDDR)
• Port C data register (PCDR)
• Port C register (PORTC)
• Port C pull-up MOS control register (PCPCR)
10.11.1 Port C Data Direction Register (PCDDR)
The individual bits of PCDDR specify input or output for the pins of port C.
PCDDR cannot be read; if it is, an undefined value will be read.
Bit
7
6
5
4
3
2
1
0
Bit Name
PC7DDR
PC6DDR
PC5DDR
PC4DDR
PC3DDR
PC2DDR
PC1DDR
PC0DDR
Port C
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
•
•
•
Modes 1 and 2
Port C pins are address outputs regardless of the
PCDDR settings.
Modes 7 (when EXPE = 1)and 4
Setting a PCDDR bit to 1 makes the
corresponding port C pin an address output,
while clearing the bit to 0 makes the pin an input
port.
Mode 7 (when EXPE = 0)
Port C is an I/O port, and its pin functions can be
switched with PCDDR.
Rev.7.00 Mar. 18, 2009 page 517 of 1136
Section 10 I/O Ports
REJ09B0109-0700