r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 572

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
10.3.2
P3DR stores output data for the port 3 pins.
10.3.3
PORT3 shows the pin states of port 3. PORT3 cannot be modified.
Note:
Rev. 1.00 Sep. 19, 2008 Page 542 of 1342
REJ09B0467-0100
Bit
7, 6
5
4
3
2
1
0
Bit
7, 6
5
4
3
2
1
0
Bit Name

P35DR
P34DR
P33DR
P32DR
P31DR
P30DR
Bit Name

P35
P34
P33
P32
P31
P30
*
Port 3 Data Register (P3DR)
Port 3 Register (PORT3)
Determined by the states of pins P35 to P30.
Initial Value
All 0
0
0
0
0
0
0
Initial Value
Undefined
*
*
*
*
*
*
R/W

R/W
R/W
R/W
R/W
R/W
R/W
R/W

R
R
R
R
R
R
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 as a general purpose I/O.
Description
Reserved
If these bits are read, they will return an undefined
value.
If this register is read while a P3DDR bit is set to 1,
the corresponding P3DR value is read. If this
register is read while a P3DDR bit is cleared to 0,
the corresponding pin state is read.