h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 172

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 I/O Ports
9.1.2
P1DR is an 8-bit readable/writable register that stores output data for port 1 pins.
9.1.3
PORT1 is an 8-bit read-only register that shows the pin states.
PORT1 cannot be modified.
Note:
Rev. 3.00 Oct 04, 2005 page 132 of 598
REJ09B0155-0300
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Bit Name
P17DR
P16DR
P15DR
P14DR
P13DR
P12DR
P11DR
P10DR
Bit Name
P17
P16
P15
P14
P13
P12
P11
P10
*
Port 1 Data Register (P1DR)
Port 1 Register (PORT1)
Determined by the states of pins P17 to P10.
Initial Value
0
0
0
0
0
0
0
0
Initial Value
Undefined *
Undefined *
Undefined *
Undefined *
Undefined *
Undefined *
Undefined *
Undefined *
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
Output data for a pin is stored when the pin is
specified as a general purpose I/O port.
If a port 1 read is performed while P1DDR bits are
set to 1, the P1DR values are read. If a port 1 read is
performed while P1DDR bits are cleared to 0, the pin
states are read.
Description
Description