Datasheet

Section 9 I/O Ports
Page 234 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
9.1.2 Port 1 Data Register (P1DR)
P1DR stores output data for the port 1 pins.
Bit Bit Name Initial Value R/W Description
7 P17DR 0 R/W
6 P16DR 0 R/W
5 P15DR 0 R/W
An output data for a pin is stored when the pin function is
specified to a general purpose output port.
4 P14DR 0 R/W
3 P13DR 0 R/W
2 P12DR 0 R/W
1 P11DR 0 R/W
0 P10DR 0 R/W
9.1.3 Port 1 Register (PORT1)
PORT1 shows the pin states.
Bit Bit Name Initial Value R/W Description
7 P17 ⎯
*
R
6 P16 ⎯
*
R
5 P15 ⎯
*
R
4 P14 ⎯
*
R
If a port 1 read is performed while P1DDR bits are set to
1, the P1DR value is read. If a port 1 read is performed
while P1DDR bits are cleared to 0, the pin states are read.
3 P13 ⎯
*
R
2 P12 ⎯
*
R
1 P11 ⎯
*
R
0 P10 ⎯
*
R
Note: * Determined by the states of pins P17 to P10.