Datasheet

Section 10 I/O Ports
Rev. 6.00 Mar. 18, 2010 Page 341 of 982
REJ09B0054-0600
10.8.3 Port C Register (PORTC)
PORTC shows port C pin states. This register cannot be modified.
Bit Bit Name Initial Value R/W Description
7 PC7 ⎯
*
R
6 PC6 ⎯
*
R
5 PC5 ⎯
*
R
4 PC4 ⎯
*
R
3 PC3 ⎯
*
R
2 PC2 ⎯
*
R
1 PC1 ⎯
*
R
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.
0 PC0 ⎯
*
R
Note: * Determined by the states of pins PC7 to PC0.
10.8.4 Port C Pull-Up MOS Control Register (PCPCR)
PCPCR controls the input pull-up MOS specification as on or off for port C.
Bit Bit Name Initial Value R/W Description
7 PC7PCR 0 R/W
6 PC6PCR 0 R/W
5 PC5PCR 0 R/W
4 PC4PCR 0 R/W
3 PC3PCR 0 R/W
2 PC2PCR 0 R/W
1 PC1PCR 0 R/W
When a pin is specified as an input port, setting the
corresponding bit to 1 turns on the input pull-up MOS
for that pin.
0 PC0PCR 0 R/W