HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 418

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

9.10.2
Table 9.17 shows the port 9 register configuration.
Table 9.17 Port 9 Registers
Name
Port 9 data direction register
Port 9 data register
Port 9 register
System control register
Notes: 1. Lower 16 bits of the address.
Port 9 Data Direction Register (P9DDR)
P9DDR is a 6-bit write-only register, the individual bits of which specify input or output for the
pins of port 9. P2DDR cannot be read; if it is, an undefined value will be read. Bits 1 and 0 are
reserved.
Setting a P9DDR bit to 1 makes the corresponding port 9 pin an output pin, while clearing the bit
to 0 makes the pin an input pin.
P9DDR 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.
Rev.4.00 Sep. 07, 2007 Page 388 of 1210
REJ09B0245-0400
Bit
Initial value :
R/W
2. Value of bits 7 to 2.
Register Configuration
:
:
P97DDR P96DDR P95DDR P94DDR P93DDR P92DDR
W
7
0
W
6
0
Abbreviation
P9DDR
P9DR
PORT9
SYSCR
W
5
0
W
4
0
R/W
W
R/W
R
R/W
W
0
3
H'00 *
Undefined
H'01
Initial Value
H'00 *
2
2
W
2
0
Undefined Undefined
—
—
1
H'FF58
H'FF39
Address *
H'FEB8
H'FF68
—
—
0
1