H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 386
H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
(1025 pages)
- Current page: 386 of 1025
- Download datasheet (6Mb)
Section 9 I/O Ports
Port 3 Data Direction Register (P3DDR)
P3DDR is an 8-bit write-only register, the individual bits of which specify input or output for the
pins of port 3. Bits 7 and 6 are reserved. P3DDR cannot be read; if it is, an undefined value will be
read.
Setting a P3DDR bit to 1 makes the corresponding port 3 pin an output pin, while clearing the bit
to 0 makes the pin an input pin.
P3DDR is initialized to H'00 (bits 5 to 0) by a power-on reset, and in hardware standby mode. It
retains its prior state after a manual reset, and in software standby mode. As the SCI is initialized,
the pin states are determined by the P3DDR and P3DR specifications.
Port 3 Data Register (P3DR)
P3DR is an 8-bit readable/writable register that stores output data for the port 3 pins (P3
Bits 7 and 6 are reserved; they return an undetermined value if read, and cannot be modified.
P3DR is initialized to H'00 (bits 5 to 0) by a power-on reset, and in hardware standby mode. It
retains its prior state after a manual reset, and in software standby mode.
Rev. 3.00 Sep 15, 2006 page 352 of 988
REJ09B0330-0300
Bit
Initial value
R/W
Bit
Initial value
R/W
:
:
:
:
:
:
Undefined
Undefined
—
—
—
—
7
7
Undefined
Undefined
—
—
—
—
6
6
P35DDR
P35DR
R/W
W
5
0
5
0
P34DDR
P34DR
R/W
W
4
0
4
0
P33DDR
P33DR
R/W
W
3
0
3
0
P32DDR
P32DR
R/W
W
2
0
2
0
P31DDR
P31DR
R/W
W
1
0
1
0
P30DDR
5
P30DR
to P3
R/W
W
0
0
0
0
0
).
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