HD6432621 Hitachi, HD6432621 Datasheet - Page 299

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Port C Data Register (PCDR)
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)
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.
Bit
Initial value :
R/W
Bit
Initial value :
R/W
:
:
:
:
PC7DR
R/W
PC7
—*
7
0
7
R
PC6DR
R/W
PC6
—*
6
0
6
R
PC5DR
R/W
PC5
—*
5
0
5
R
PC4DR
R/W
PC4
—*
4
0
4
R
PC3DR
R/W
PC3
—*
3
0
3
R
PC2DR
R/W
PC2
—*
2
0
2
R
PC1DR
R/W
PC1
—*
1
0
1
R
PC0DR
R/W
PC0
—*
0
0
0
R
255