HD6432646 Hitachi, HD6432646 Datasheet - Page 306

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

9.11.2
Table 9-22 shows the port D register configuration.
Table 9-22 Port D Registers
Name
Port D data direction register
Port D data register
Port D register
Port D MOS pull-up control register
Note: * Lower 16 bits of the address.
Port D Data Direction Register (PDDDR)
PDDDR is an 8-bit write-only register, the individual bits of which specify input or output for the
pins of port D. PDDDR cannot be read; if it is, an undefined value will be read.
PDDDR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
Port D Data Register (PDDR)
PDDR is an 8-bit readable/writable register that stores output data for the port D pins (PD7 to
PD0).
PDDR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
272
Bit
Initial value :
R/W
Bit
Initial value :
R/W
Register Configuration
:
:
:
:
PD7DDR PD6DDR PD5DDR PD4DDR PD3DDR PD2DDR PD1DDR PD0DDR
PD7DR
R/W
W
7
0
7
0
PD6DR
R/W
W
6
0
6
0
PD5DR
Abbreviation
PDDDR
PDDR
PORTD
PDPCR
R/W
W
5
0
5
0
PD4DR
R/W
W
4
0
4
0
R/W
W
R/W
R
R/W
PD3DR
R/W
W
3
0
3
0
Initial Value
H'00
H'00
Undefined
H'00
PD2DR
R/W
W
2
0
2
0
PD1DR
R/W
W
1
0
1
0
Address*
H'FE3C
H'FF0C
H'FFBC
H'FE43
PD0DR
R/W
W
0
0
0
0