Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 433 of 926
REJ09B0283-0300
10.1.2 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
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
Output data for a pin is stored when the pin function
is specified to a general purpose I/O.
10.1.3 Port 1 Register (PORT1)
PORT1 shows the pin states.
PORT1 cannot be modified.
Bit Bit Name Initial Value R/W Description
7 P17 Undefined
*
R
6 P16 Undefined
*
R
5 P15 Undefined
*
R
4 P14 Undefined
*
R
3 P13 Undefined
*
R
2 P12 Undefined
*
R
1 P11 Undefined
*
R
0 P10 Undefined
*
R
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.
Note: * Determined by the states of pins P17 to P10.