HD64F7045F28V Datasheet, PDF (662/925 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7040 Series

18.3.7 Port C I/O Register (PCIOR)
The port C I/O register (PCIOR) is a 16-bit read/write register that selects input or output for the
16 port C pins. Bits PC15IOR–PC0IOR correspond to pins PC15/A15 to PC0/A0. PCIOR is
enabled when the port C pins function as general input/outputs (PC15–PC0). For other functions,
it is disabled.
When the port C pin functions are as PC15–PC0, a given pin in port C is an output pin if its
corresponding PCIOR bit is set to 1, and an input pin if the bit is cleared to 0.
PCIOR is initialized to H'0000 by external power-on reset; however, it is not initialized for manual
resets, reset by WDT, standby mode, or sleep mode, so the previous values are maintained.
Bit: 15
14
13
12
11
10
9
8
PC15 PC14 PC13 PC12 PC11 PC10 PC9 PC8
IOR
IOR
IOR
IOR
IOR
IOR
IOR
IOR
Initial value: 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
Bit: 7
6
5
4
3
2
1
0
PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0
IOR
IOR
IOR
IOR
IOR
IOR
IOR
IOR
Initial value: 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
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