SH7706 Datasheet, PDF (560/749 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7700 Series

Section 18 I/O Ports
18.3.2 Port C Data Register (PCDR)
Port C data register (PCDR) is an 8-bit read/write register that stores data for pins PTC7 to PTC0.
PC7DT to PC0DT bit corresponds to PTC7 to PTC0 pin. When the pin function is general output
port, if the port is read, the value of the corresponding PCDR bit is returned directly. When the
function is general input port, if the port is read, the corresponding pin level is read. Table 18.3
shows the function of PCDR.
PCDR is initialized to H'00 by a power-on reset. It retains its previous value in standby mode and
sleep mode, and in a manual reset.
Bit
Bit Name
Initial Value R/W
Description
7
PC7DT
0
R/W
Table 18.3 shows the function of PCDR.
6
PC6DT
0
R/W
5
PC5DT
0
R/W
4
PC4DT
0
R/W
3
PC3DT
0
R/W
2
PC2DT
0
R/W
1
PC1DT
0
R/W
0
PC0DT
0
R/W
Table 18.3 Read/Write Operation of the Port C Data Register (PCDR)
PCnMD1 PCnMD0 Pin State
Read
Write
0
0
Other function PCDR value Value is written to PCDR, but does not affect
pin state.
1
Output
PCDR value Write value is output from pin.
1
0
Input (Pull-up Pin state
MOS: on)
Value is written to PCDR, but does not affect
pin state.
1
Input (Pull-up Pin state
Value is written to PCDR, but does not affect
MOS: off)
pin state.
Note: n = 0 to 7
Rev. 5.00 May 29, 2006 page 512 of 698
REJ09B0146-0500