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(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
(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
Initial Value
R/W Description
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
P1DR stores output data for the port 1 pins that are
used as the general output port.
If this register is read, the P1DR values are read for
the bits with the corresponding P1DDR bits set to 1.
For the bits with the corresponding P1DDR bits
cleared to 0, the pin states are read.
Description
When the pins are in the input state, the
corresponding input pull-up MOS is turned on when
a P1PCR bit is set to 1.
Do not change the initial value when using the
address-data multiplex extended bus mode.
Rev. 1.00 Mar. 12, 2008 Page 193 of 1178
Section 8 I/O Ports
REJ09B0403-0100
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