h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 189

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

9.7
Port B is an 8-bit I/O port that also has other functions. Port B has the following registers.
9.7.1
PBDDR is an 8-bit write-only register, the individual bits of which specify whether the pins of
port B are used for input or output.
Bit
7
6
5
4
3
2
1
0
Port B data direction register (PBDDR)
Port B data register (PBDR)
Port B register (PORTB)
Port B pull-up MOS control register (PBPCR)
Port B open-drain control register (PBODR)
Bit Name
PB7DDR
PB6DDR
PB5DDR
PB4DDR
PB3DDR
PB2DDR
PB1DDR
PB0DDR
Port B Data Direction Register (PBDDR)
Port B
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
When a pin is specified as a general purpose I/O
port, setting these bits to 1 makes the corresponding
port 1 pin an output pin. Clearing these bits to 0
makes the pin an input pin.
Rev. 3.00 Oct 04, 2005 page 149 of 598
Section 9 I/O Ports
REJ09B0155-0300