HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 387

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Port 3 Data Direction Register (P3DDR)
P3DDR is an 8-bit write-only register, the individual bits of which specify input or output for the
pins of port 3. Bits 7 and 6 are reserved; they return an undefined value if read, and cannot be
modified.
Setting a P3DDR bit to 1 makes the corresponding port 3 pin an output pin, while clearing the bit
to 0 makes the pin an input pin.
P3DDR is initialized to H'00 (bits 5 to 0) by a reset, and in hardware standby mode. It retains its
prior state in software standby mode. As the SCI is initialized, the pin states are determined by the
P3DDR and P3DR specifications.
Port 3 Data Register (P3DR)
P3DR is an 8-bit readable/writable register that stores output data for the port 3 pins (P3
Bits 7 and 6 are reserved; they return an undefined value if read, and cannot be modified.
P3DR is initialized to H'00 (bits 5 to 0) by a reset, and in hardware standby mode. It retains its
prior state in software standby mode.
Bit
Initial value :
R/W
Bit
Initial value :
R/W
:
:
:
:
Undefined Undefined
Undefined Undefined
—
—
—
—
7
7
—
—
—
—
6
6
P35DDR P34DDR P33DDR P32DDR P31DDR P30DDR
P35DR
R/W
W
5
0
5
0
P34DR
R/W
W
4
0
4
0
Rev.4.00 Sep. 07, 2007 Page 357 of 1210
P33DR
R/W
W
3
0
3
0
P32DR
R/W
W
2
0
2
0
P31DR
REJ09B0245-0400
R/W
W
1
0
1
0
5
to P3
P30DR
R/W
W
0
0
0
0
0
).