HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 412

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

9.9.2
Table 9.15 shows the port 8 register configuration.
Table 9.15 Port 8 Registers
Name
Port 8 data direction register
Port 8 data register
Port 8 register
Port function control register2
Notes: 1. Lower 16 bits of the address.
Port 8 Data Direction Register (P8DDR)
P8DDR is a 7-bit write-only register, the individual bits of which specify input or output for the
pins of port 8. P2DDR cannot be read; if it is, an undefined value will be read. Bit 7 is reserved.
Setting a P8DDR bit to 1 makes the corresponding port 8 pin an output pin, while clearing the bit
to 0 makes the pin an input pin.
P8DDR 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.
Rev.4.00 Sep. 07, 2007 Page 382 of 1210
REJ09B0245-0400
Bit
Initial value : Undefined
R/W
2. Value of bits 6 to 0.
Register Configuration
:
:
—
—
7
P86DDR P85DDR P84DDR P83DDR P82DDR P81DDR P80DDR
W
6
0
Abbreviation
P8DDR
P8DR
PORT8
PFCR2
W
5
0
W
4
0
R/W
W
R/W
R
R/W
W
0
3
H'00
Undefined
Initial Value *
H'00
H'30
W
2
0
2
W
1
0
H'FF67
H'FF57
Address *
H'FEB7
H'FFAC
W
0
0
1