HD6412350 Hitachi, HD6412350 Datasheet - Page 398

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Port D MOS Pull-Up Control Register (PDPCR) [H8S/2351 Only]
PDPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port D on an individual bit basis.
When a PDDDR bit is cleared to 0 (input port setting) in mode 3 or 7, setting the corresponding
PDPCR bit to 1 turns on the MOS input pull-up for the corresponding pin.
PDPCR is initialized to H'00 by a power-on reset, and in hardware standby mode. It retains its
prior state after a manual reset, and in software standby mode.
9.11.3
Modes 1, 4, and 5 [H8S/2351]; Modes 1, 2, 4, 5, and 6 [H8S/2351]: In modes 1, 2, 4, 5, and 6,
port D pins are automatically designated as data I/O pins.
Port D pin functions in modes 1, 2, 4, 5, and 6 are shown in figure 9-20.
Modes 3 and 7 [H8S/2351 Only]: In modes 3 and 7, port D pins function as I/O ports. Input or
output can be specified for each pin on an individual bit basis. Setting a PDDDR bit to 1 makes
the corresponding port D pin an output port, while clearing the bit to 0 makes the pin an input port.
378
Bit
Initial value
R/W
Pin Functions
:
:
:
PD7PCR
Figure 9-20 Port D Pin Functions (Modes 1, 2, 4, 5, and 6)
R/W
7
0
PD6PCR
R/W
6
0
PD5PCR
Port D
R/W
5
0
PD4PCR
R/W
4
0
D
D
D
D
D
D
D
D
15
14
13
12
11
10
9
8
PD3PCR
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
R/W
3
0
PD2PCR
R/W
2
0
PD1PCR
R/W
1
0
PD0PCR
R/W
0
0