Datasheet
Rev.6.00 Oct.28.2004 page 312 of 1016
REJ09B0138-0600H
9.10 Port C
9.10.1 Overview
Port C is an 8-bit I/O port. Port C has an address bus output function, and the pin functions change according to the
operating mode.
Port C has a on-chip MOS input pull-up function that can be controlled by software (on-chip ROM version only).
Figure 9-15 shows the port C pin configuration.
PC
7
/A
7
PC
6
/A
6
PC
5
/A
5
PC
4
/A
4
PC
3
/A
3
PC
2
/A
2
PC
1
/A
1
PC
0
/A
0
Port C
PC
7
PC
6
PC
5
PC
4
PC
3
PC
2
PC
1
PC
0
Note: * Modes 6 and 7 are provided in the on-chip ROM version only.
(input)/
(input)/
(input)/
(input)/
(input)/
(input)/
(input)/
(input)/
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
Port C pins
Pin functions in mode 6*
Pin functions in mode 7*
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
Pin functions in modes 4 and 5
PC
7
PC
6
PC
5
PC
4
PC
3
PC
2
PC
1
PC
0
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
Figure 9-15 Port C Pin Functions