HD6432621 Hitachi, HD6432621 Datasheet - Page 300

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

Port C MOS Pull-Up Control Register (PCPCR)
PCPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port C on an individual bit basis.
In modes 6 and 7, if a pin is in the input state in accordance with the settings in the SCI’s SMR
and SCR, and in PCDDR, setting the corresponding PCPCR bit to 1 turns on the MOS input pull-
up for that pin.
PCPCR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
Port C Open Drain Control Register (PCODR)
PCODR is an 8-bit readable/writable register that controls the PMOS on/off status for each port C
pin (PC7 to PC0).
If the setting of bits AE3 to AE0 in PFCR is other than address output, setting a PCODR bit to 1
makes the corresponding port C pin an NMOS open-drain output, while clearing the bit to 0 makes
the pin a CMOS output.
PCODR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state
after a manual reset, and in software standby mode.
256
Bit
Initial value :
R/W
Bit
Initial value :
R/W
:
:
:
:
PC7PCR PC6PCR PC5PCR PC4PCR PC3PCR PC2PCR PC1PCR PC0PCR
PC7ODR PC6ODR PC5ODR PC4ODR PC3ODR PC2ODR PC1ODR PC0ODR
R/W
R/W
7
0
7
0
R/W
R/W
6
0
6
0
R/W
R/W
5
0
5
0
R/W
R/W
4
0
4
0
R/W
R/W
3
0
3
0
R/W
R/W
2
0
2
0
R/W
R/W
1
0
1
0
R/W
R/W
0
0
0
0