HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 303

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Port D Data Register (PDDR)
PDDR is an 8-bit readable/writable register that stores output data for the port D pins (PD
PDDR is initialized to H'00 by a power-on reset, and in hardware standby mode. It retains its prior
state after a manual reset, and in software standby mode.
Port D Register (PORTD)
PORTD is an 8-bit read-only register that shows the pin states. It cannot be written to. Writing of
output data for the port D pins (PD
If a port D read is performed while PDDDR bits are set to 1, the PDDR values are read. If a port D
read is performed while PDDDR bits are cleared to 0, the pin states are read.
After a power-on reset and in hardware standby mode, PORTD contents are determined by the pin
states, as PDDDR and PDDR are initialized. PORTD retains its prior state after a manual reset,
and in software standby mode.
Bit
Initial value
R/W
Note: * Determined by state of pins PD
Bit
Initial value
R/W
:
:
:
:
:
:
PD7DR
R/W
PD7
—*
7
0
R
7
PD6DR
R/W
PD6
6
0
—*
R
6
7
to PD
PD5DR
R/W
PD5
—*
5
0
R
5
0
7
) must always be performed on PDDR.
to PD
PD4DR
0
R/W
.
PD4
—*
R
4
0
4
Rev.3.00 Mar. 26, 2007 Page 261 of 772
PD3DR
R/W
PD3
—*
3
0
R
3
PD2DR
R/W
PD2
—*
R
2
0
2
PD1DR
Section 8 I/O Ports
REJ09B0355-0300
R/W
PD1
—*
R
1
0
1
PD0DR
7
R/W
PD0
to PD
—*
R
0
0
0
0
).