Renesas H8S/2633 Series Hardware Manual page 465

Port C Data Register (PCDR)
Bit : 7
PC7DR
Initial value : 0
R/W : R/W
PCDR is an 8-bit readable/writable register that stores output data for the port C pins (PC7 to
PC0).
PCDR is initialized to H'00 by a power-on reset, and in hardware standby mode. It retains its prior
state by a manual reset or in software standby mode.
Port C Register (PORTC)
Bit : 7
PC7
Initial value : —*
R/W : R
Note: * Determined by state of pins PC7 to PC0.
PORTC is an 8-bit read-only register that shows the pin states. It cannot be written to. Writing of
output data for the port C pins (PC7 to PC0) must always be performed on PCDR.
If a port C read is performed while PCDDR bits are set to 1, the PCDR values are read. If a port C
read is performed while PCDDR bits are cleared to 0, the pin states are read.
After a power-on reset and in hardware standby mode, PORTC contents are determined by the pin
states, as PCDDR and PCDR are initialized. PORTC retains its prior state by a manual reset or in
software standby mode.
6 5
PC6DR PC5DR PC4DR
0 0
R/W R/W
6 5
PC6 PC5
—* —*
R R
4 3
PC3DR PC2DR
0 0
R/W R/W R/W
4 3
PC4 PC3 PC2
—* —* —*
R R
2 1 0
PC1DR PC0DR
0 0 0
R/W R/W
2 1 0
PC1 PC0
—* —*
R R R
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