SH7052 Datasheet, PDF (692/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

19.4 Port C
Port C is an input/output port with the 5 pins shown in figure 19.3.
Port C
PC4 (I/O) /IRQ0 (input)
PC3 (I/O) /RxD2 (input)
PC2 (I/O) /TxD2 (output)
PC1 (I/O) /RxD1 (input)
PC0 (I/O) /TxD1 (output)
Figure 19.3 Port C
19.4.1 Register Configuration
The port C register configuration is shown in table 19.5.
Table 19.5 Register Configuration
Name
Abbreviation R/W Initial Value Address
Access Size
Port C data register PCDR
R/W H'0000
H'FFFFF73E 8, 16
Note: A register access is performed in four or five cycles regardless of the access size.
19.4.2 Port C Data Register (PCDR)
Bit: 15
14
13
12
11
10
9
8
—
—
—
—
—
—
—
—
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
Bit: 7
6
5
4
3
2
1
0
—
—
—
PC4 PC3 PC2 PC1 PC0
DR
DR
DR
DR
DR
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R/W R/W R/W R/W R/W
The port C data register (PCDR) is a 16-bit readable/writable register that stores port C data. Bits
PC4DR to PC0DR correspond to pins PC4/IRQ0 to PC0/TxD1.
666