Port B; Port B Data Direction Register (Pbddr) - Renesas H8S Series Hardware Manual

Section 8 I/O Ports
8.11

Port B

Port B is an 8-bit I/O port. Port B pins also function as the wake-up event input pins and LPC
input/output pins. Port B has the following registers. PBDDR and PBPIN have the same address.

• Port B data direction register (PBDDR)

• Port B output data register (PBODR)
• Port B input data register (PBPIN)
8.11.1 Port B Data Direction Register (PBDDR)
PBDDR is used to specify the input/output attribute of each pin of port B.
Bit Bit Name
7 PB7DDR
6 PB6DDR
5 PB5DDR
4 PB4DDR
3 PB3DDR
2 PB2DDR
1 PB1DDR
0 PB0DDR
Rev. 3.00 Jul. 14, 2005 Page 204 of 986
REJ09B0098-0300
Initial Value R/W
0 W
0 W
0 W
0 W
0 W
0 W
0 W
0 W
Description
The corresponding port B pins are output ports
when the PBDDR bits are set to 1, and input ports
when cleared to 0.