r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 586

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
10.5.3
PORT5 shows the pin states of port 5. PORT5 cannot be modified.
Note:
10.5.4
P5ODR specifies the output type of each port 5 pin.
Rev. 1.00 Sep. 19, 2008 Page 558 of 1270
REJ09B0466-0100
Bit
7 to 4
3
2
1
0
Bit
7 to 4
3
2
1
0
*
Bit Name

P53
P52
P51
P50
Bit Name

P53ODR
P52ODR
P51ODR
P50ODR
Port 5 Register (PORT5)
Port 5 Open Drain Control Register (P5ODR)
Determined by the states of pins P53 to P50.
Initial Value
Undefined
*
*
*
*
Initial Value
All 0
0
0
0
0
R/W
R
R
R
R
R
R/W

R/W
R/W
R/W
R/W
Description
Reserved
If these bits are read, they will return an undefined
value.
If the P53 to P50 bits are read while a P5DDR bit is
set to 1, the corresponding P5DR value is read. If
this register is read while a P5DDR bit is cleared to
0, the corresponding pin state is read.
Description
Reserved
These bits are always read as 0. Only the initial
values should be written to these bits.
When BACK-B/BREQO-B output is not selected,
setting a P5ODR bit to 1 makes the corresponding
pin an NMOS open-drain output pin, while clearing
a P5ODR bit to 0 makes the corresponding pin a
CMOS output pin.