Port 3; Port 3 Data Direction Register (P3Ddr) - Renesas H8S/2368 Series Hardware Manual

9.3

Port 3

Port 3 is a 6-bit I/O port that also has other functions. The port 3 has the following registers.

• Port 3 data direction register (P3DDR)

• Port 3 data register (P3DR)
• Port 3 register (PORT3)
• Port 3 open drain control register (P3ODR)
• Port function control register 2(PFCR2)
9.3.1 Port 3 Data Direction Register (P3DDR)
The individual bits of P3DDR specify input or output for the pins of port 3.
P3DDR cannot be read; if it is, an undefined value will be read.
Bit Bit Name Initial Value
7 — 0
6 — 0
5 P35DDR 0
4 P34DDR 0
3 P33DDR 0
2 P32DDR 0
1 P31DDR 0
0 P30DDR 0
R/W Description
— Reserved
These bits are always read as 0 and cannot be
—
modified.
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
Rev. 2.00, 05/03, page 323 of 820