SH7055S Datasheet, PDF (697/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

20.3.6 Port C IO Register (PCIOR)
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
—
—
— PC4IOR PC3IOR PC2IOR PC1IOR PC0IOR
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 IO register (PCIOR) is a 16-bit readable/writable register that selects the input/output
direction of the 5 pins in port C. Bits PC4IOR to PC0IOR correspond to pins PC4/IRQ0 to
PC0/TxD1. PCIOR is enabled when port C pins function as general input/output pins (PC4 to
PC0), and disabled otherwise.
When port C pins function as PC4 to PC0, a pin becomes an output when the corresponding bit in
PCIOR is set to 1, and an input when the bit is cleared to 0.
PCIOR is initialized to H'0000 by a power-on reset (excluding a WDT power-on reset), and in
hardware standby mode. It is not initialized in software standby mode or sleep mode.
20.3.7 Port C Control Register (PCCR)
The port C control register (PCCR) is a 16-bit readable/writable register that selects the functions
of the 5 multiplex pins in port C.
PCCR is initialized to H'0000 by a power-on reset (excluding a WDT power-on reset), and in
hardware standby mode. It is not initialized in software standby mode or sleep mode.
Bit: 15
14
13
12
11
10
9
8
—
—
—
—
—
—
— PC4MD
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R/W
Bit: 7
6
5
4
3
2
1
0
— PC3MD — PC2MD — PC1MD — PC0MD
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R/W
R
R/W
R
R/W
R
R/W
Rev.2.0, 07/03, page 659 of 960