Port 8; Port 8 Data Direction Register (P8Ddr) - Renesas H8S/2368 Series Hardware Manual

9.6

Port 8

Port 8 is a 6-bit I/O port that also has other functions. The port 8 has the following registers.

• Port 8 data direction register (P8DDR)

• Port 8 data register (P8DR)
• Port 8 register (PORT8)
9.6.1 Port 8 Data Direction Register (P8DDR)
The individual bits of P8DDR specify input or output for the pins of port 8.
P8DDR cannot be read; if it is, an undefined value will be read.
Bit Bit Name Initial Value
7 — 0
6 — 0
5 P85DDR 0
4 — 0
3 P83DDR 0
2 — 0
1 P81DDR 0
0 — 0
Rev. 2.00, 05/03, page 336 of 820
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 bit 5, 3, or 1 makes the corresponding port
—
1 pin an output pin, while clearing this bit to 0 makes
W
the pin an input pin.
—
Bits 4, 2, and 0 are reserved.
W
—