Renesas H8S/2319 series Hardware Manual page 292

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 reset, and in hardware standby mode. It retains its prior state 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 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 in software standby mode.
Rev. 5.00, 12/03, page 262 of 1088
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
PC1DR PC0DR
0 0
R/W R/W
2 1
PC1 PC0
— * — * — *
R R
0
0
0
R