HD6432670 Hitachi, HD6432670 Datasheet - Page 488

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

10.3.1
The individual bits of P3DDR specify input or output for the pins of port 3.
P3DDR cannot be read; if it is, an undefined value will be read.
Bit
7
6
5
4
3
2
1
0
10.3.2
P3DR stores output data for the port 3 pins.
Bit
7
6
5
4
3
2
1
0
Rev. 2.0, 04/02, page 442 of 906
Bit Name
—
—
P35DDR
P34DDR
P33DDR
P32DDR
P31DDR
P30DDR
Bit Name
—
—
P35DR
P34DR
P33DR
P32DR
P31DR
P30DR
Port 3 Data Direction Register (P3DDR)
Port 3 Data Register (P3DR)
Initial Value
0
0
0
0
0
0
0
0
Initial Value
0
0
0
0
0
0
0
0
R/W
—
—
W
W
W
W
W
W
R/W
—
—
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0 and cannot be
modified.
When a pin function is specified to a general purpose
I/O, setting this bit to 1 makes the corresponding port
1 pin an output pin, while clearing this bit to 0 makes
the pin an input pin.
Description
Reserved
These bits are always read as 0 and cannot be
modified.
Output data for a pin is stored when the pin function
is specified to a general purpose I/O.