HD6417750RF240V Datasheet, PDF (178/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 9 I/O Ports
9.5.2 Port B Data Register (PBDR)
PBDR is an 8-bit readable/writable register that stores output data for the port B pins.
Bit Bit Name
7 PB7DR
6 PB6DR
5 PB5DR
4 PB4DR
3 PB3DR
2 PB2DR
1 PB1DR
0 PB0DR
Initial Value R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
Description
Output data for a pin is stored when the pin is
specified as a general purpose I/O port.
9.5.3 Port B Register (PORTB)
PORTB is an 8-bit read-only register that shows port B pin states.
PORTB cannot be modified.
Bit Bit Name Initial Value R/W Description
7 PB7
6 PB6
5 PB5
4 PB4
Undefined^* R
Undefined^* R
Undefined^* R
Undefined^* R
If a port B read is performed while PBDDR bits are
set to 1, the PBDR values are read. If a port B read
is performed while PBDDR bits are cleared to 0, the
pin states are read.
3 PB3
Undefined^* R
2 PB2
Undefined^* R
1 PB1
Undefined^* R
0 PB0
Undefined^* R
Note: * Determined by the states of pins PB7 to PB0.
Rev. 7.00 Sep. 11, 2009 Page 142 of 566
REJ09B0211-0700