HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 687

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

18.3.2
The port C data register (PCDR) is a 16-bit readable/writable register that stores port C data. Bits
PC15DR to PC0DR correspond to pins PC15 to PC0 (multiplexed functions omitted here).
When a pin functions is a general output, if a value is written to PCDR, that value is output
directly from the pin, and if PCDR is read, the register value is returned directly regardless of the
pin state.
When a pin function is a general input, if PCDR is read, the pin state, not the register value, is
returned directly. If a value is written to PCDR, although that value is written into PCDR, it does
not affect the pin state. Table 18.3 summarizes port C data register read/write operations.
• PCDR
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Name
PC15DR
PC14DR
PC13DR
PC12DR
PC11DR
PC10DR
PC9DR
PC8DR
PC7DR
PC6DR
PC5DR
PC4DR
PC3DR
PC2DR
PC1DR
PC0DR
Port C Data Register (PCDR)
Initial Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
See table 18.3
Rev.4.00 Mar. 27, 2008 Page 643 of 882
REJ09B0108-0400
18. I/O Ports