HD6432670 Hitachi, HD6432670 Datasheet - Page 527

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

10.12.4 Port D Pull-up Control Register (PDPCR)
PDPCR controls on/off states of the input pull-up MOS of port D. PDPCR is valid in modes3* and
7.
Bit
7
6
5
4
3
2
1
0
Note: Only in H8S/2678R Series.
10.12.5 Pin Functions
Port D pins also function as data I/Os. The correspondence between the register specification and
the pin functions is shown below.
The pin function is switched as shown below according to the operating mode, bit EXPE, and bit
PDDDR.
Note: Only in H8S/2678R Series.
10.12.6 Port D Input Pull-Up MOS States
Port D has a built-in input pull-up MOS function that can be controlled by software. This input
pull-up MOS function can be used in modes 3*and 7. Input pull-up MOS can be specified as on
or off on a bit-by-bit basis.
In modes 3* and 7, when a PDDDR bit is cleared to 0, setting the corresponding PDPCR bit to 1
turns on the input pull-up MOS for that pin.
Operating
mode
EXPE
PDDDR
Pin function
PD7/D15, PD6/D14, PD5/D13, PD4/D12, PD3/D11, PD2/D10, PD1/D9, PD0/D8
Bit Name
PD7PCR
PD6PCR
PD5PCR
PD4PCR
PD3PCR
PD2PCR
PD1PCR
PD0PCR
1, 2, 4, 5, 6
Data I/O
Initial Value
—
—
0
0
0
0
0
0
0
0
PD input
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
Description
When the pin is in its input state, the input pull-up
MOS of the input pin is on when the corresponding
bit is set to 1.
0
PD output
3*, 7
1
Rev. 2.0, 04/02, page 481 of 906
Data I/O
—
1