HD64F2145 Datasheet, PDF (201/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

8.2.2 Port 1 Data Register (P1DR)
P1DR stores output data for the port 1 pins.
Bit Bit Name Initial Value R/W
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
Description
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.
8.2.3 Port 1 Pull-Up MOS Control Register (P1PCR)
P1PCR controls the on/off status of the port 1 on-chip input pull-up MOSs.
Bit Bit Name Initial Value R/W
7
P17PCR 0
R/W
6
P16PCR 0
R/W
5
P15PCR 0
R/W
4
P14PCR 0
R/W
3
P13PCR 0
R/W
2
P12PCR 0
R/W
1
P11PCR 0
R/W
0
P10PCR 0
R/W
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.
Rev. 2.0, 08/02, page 161 of 788