HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 413

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

Port 8 Data Register (P8DR)
P8DR is a 7-bit readable/writable register that stores output data for the port 8 pins (P8
Bit 7 is reserved; it returns an undefined value if read, and cannot be modified.
P8DR is initialized to H'00 (bits 6 to 0) by a reset, and in hardware standby mode. It retains its
prior state in software standby mode.
Port 8 Register (PORT8)
Note: * Determined by state of pins P8
PORT8 is a 7-bit read-only register that shows the pin states. It cannot be written to. Writing of
output data for the port 8 pins (P8
Bit 7 is reserved; it returns an undefined value if read, and cannot be modified.
If a port 8 read is performed while P8DDR bits are set to 1, the P8DR values are read. If a port 8
read is performed while P8DDR bits are cleared to 0, the pin states are read.
After a reset and in hardware standby mode, PORT8 contents are determined by the pin states, as
P8DDR and P8DR are initialized. PORT8 retains its prior state in software standby mode.
Bit
Initial value : Undefined
R/W
Bit
Initial value : Undefined
R/W
:
:
:
:
—
—
—
—
7
7
P86DR
R/W
P86
— *
R
6
0
6
6
to P8
6
P85DR
to P8
R/W
P85
— *
0
R
) must always be performed on P8DR.
5
0
5
0
.
P84DR
R/W
P84
— *
R
0
4
4
Rev.4.00 Sep. 07, 2007 Page 383 of 1210
P83DR
R/W
P83
— *
R
3
0
3
P82DR
R/W
P82
— *
R
2
0
2
P81DR
REJ09B0245-0400
R/W
P81
— *
R
1
0
1
6
to P8
P80DR
R/W
P80
— *
R
0
0
0
0
).