HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 540

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

Section 10 I/O Ports
10.2
Port 2 is an 8-bit I/O port that also has other functions. The port 2 has the following registers.
• Port 2 data direction register (P2DDR)
• Port 2 data register (P2DR)
• Port 2 register (PORT2)
10.2.1
The individual bits of P2DDR specify input or output for the pins of port 2.
P2DDR cannot be read; if it is, an undefined value will be read.
Bit
7
6
5
4
3
2
1
0
Rev.7.00 Mar. 18, 2009 page 472 of 1136
REJ09B0109-0700
Bit Name
P20DDR
P27DDR
P26DDR
P25DDR
P24DDR
P23DDR
P22DDR
P21DDR
Port 2
Port 2 Data Direction Register (P2DDR)
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
When a pin function is specified to a general
purpose I/O, setting this bit to 1 makes the
corresponding port 1 pin an output pin, while
clearing this bit to 0 makes the pin an input pin.