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Section 9 I/O Ports
9.1.2
Port 1 Data Register (P1DR)
P1DR stores output data for the port 1 pins.
Bit
Bit Name
7
P17DR
6
P16DR
5
P15DR
4
P14DR
3
P13DR
2
P12DR
1
P11DR
0
P10DR
9.1.3
Port 1 Pull-Up MOS Control Register (P1PCR)
P1PCR controls the port 1 built-in input pull-up MOSs.
Bit
Bit Name
7
P17PCR
6
P16PCR
5
P15PCR
4
P14PCR
3
P13PCR
2
P12PCR
1
P11PCR
0
P10PCR
Rev. 3.00 Jan 25, 2006 page 210 of 872
REJ09B0286-0300
Initial Value
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
Initial Value
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
Description
P1DR stores output data for the port 1 pins that
are used as the general output port.
If a port 1 read is performed while the P1DDR bits
are set to 1, the P1DR values are read. If a port 1
read is performed while the P1DDR bits are
cleared to 0, the pin states are read.
Description
When the pins are in input state, the
corresponding input pull-up MOS is turned on
when a P1PCR bit is set to 1.
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