HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 419

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

Port 9 Data Register (P9DR)
P9DR is a 6-bit readable/writable register that stores output data for the port 9 pins (P9
Bits 1 and 0 are reserved; they return an undefined value if read, and cannot be modified.
P9DR is initialized to H'00 (bits 7 to 2) by a reset, and in hardware standby mode. It retains its
prior state in software standby mode.
Port 9 Register (PORT9)
Note: * Determined by state of pins P9
PORT9 is a 6-bit read-only register that shows the pin states. It cannot be written to. Writing of
output data for the port 9 pins (P9
Bits 1 and 0 are reserved; they return an undefined value if read, and cannot be modified.
If a port 9 read is performed while P9DDR bits are set to 1, the P9DR values are read. If a port 9
read is performed while P9DDR bits are cleared to 0, the pin states are read.
After a reset and in hardware standby mode, PORT9 contents are determined by the pin states, as
P9DDR and P9DR are initialized. PORT9 retains its prior state in software standby mode.
Bit
Initial value :
R/W
Bit
Initial value :
R/W
:
:
:
:
P97DR
R/W
P97
— *
R
7
0
7
P96DR
R/W
P96
— *
R
6
0
6
7
to P9
7
P95DR
to P9
R/W
P95
— *
2
R
) must always be performed on P9DR.
5
0
5
2
.
P94DR
R/W
P94
— *
R
4
0
4
Rev.4.00 Sep. 07, 2007 Page 389 of 1210
P93DR
R/W
P93
— *
R
3
0
3
P92DR
R/W
P92
— *
R
2
0
2
Undefined Undefined
Undefined Undefined
REJ09B0245-0400
—
—
—
—
1
1
7
to P9
—
—
—
—
0
0
2
).