HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 589

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

10.12
Port D is an 8-bit I/O port that also has other functions. The port D has the following registers.
• Port D data direction register (PDDDR)
• Port D data register (PDDR)
• Port D register (PORTD)
• Port D pull-up MOS control register (PDPCR)
10.12.1 Port D Data Direction Register (PDDDR)
The individual bits of PDDDR specify input or output for the pins of port D.
PDDDR cannot be read; if it is, an undefined value will be read.
Bit
7
6
5
4
3
2
1
0
Bit Name
PD7DDR
PD6DDR
PD5DDR
PD4DDR
PD3DDR
PD2DDR
PD1DDR
PD0DDR
Port D
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
•
•
Modes 7 (when EXPE = 1), 1, 2, and 4
Port D is automatically designated for data
input/output.
Mode 7 (when EXPE = 0)
Port D is an I/O port, and its pin functions can be
switched with PDDDR.
Rev.7.00 Mar. 18, 2009 page 521 of 1136
Section 10 I/O Ports
REJ09B0109-0700