Port 2; Port 2 Data Direction Register (P2Ddr); Port 2 Data Register (P2Dr) - Renesas H8S/2368 Series Hardware Manual

9.2

Port 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)
9.2.1 Port 2 Data Direction Register (P2DDR)
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 Bit Name Initial Value
7 P27DDR 0
6 P26DDR 0
5 P25DDR 0
4 P24DDR 0
3 P23DDR 0
2 P22DDR 0
1 P21DDR 0
0 P20DDR 0
9.2.2 Port 2 Data Register (P2DR)
P2DR stores output data for the port 2 pins.
Bit Bit Name Initial Value
7 P27DR 0
6 P26DR 0
5 P25DR 0
4 P24DR 0
3 P23DR 0
2 P22DR 0
1 P21DR 0
0 P20DR 0
R/W Description
W When a pin function is specified to a general purpose
I/O, setting this bit to 1 makes the corresponding port
W
1 pin an output pin, while clearing this bit to 0 makes
W
the pin an input pin.
W
W
W
W
W
R/W Description
R/W Output data for a pin is stored when the pin function
is specified to a general purpose I/O.
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Rev. 2.00, 05/03, page 313 of 820