Datasheet

Section 9 I/O Ports
Rev.6.00 Sep. 27, 2007 Page 410 of 1268
REJ09B0220-0600
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 built-in MOS input pull-up function that can be controlled by software.
Figure 9.12 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
(input) / A
7
(output)
PC
6
(input) / A
6
(output)
PC
5
(input) / A
5
(output)
PC
4
(input) / A
4
(output)
PC
3
(input) / A
3
(output)
PC
2
(input) / A
2
(output)
PC
1
(input) / A
1
(output)
PC
0
(input) / A
0
(output)
Port C pins
Pin functions in mode 6
Pin functions in mode 7
A
7
(output)
A
6
(output)
A
5
(output)
A
4
(output)
A
3
(output)
A
2
(output)
A
1
(output)
A
0
(output)
Pin functions in modes 4 and 5
PC
7
(I/O)
PC
6
(I/O)
PC
5
(I/O)
PC
4
(I/O)
PC
3
(I/O)
PC
2
(I/O)
PC
1
(I/O)
PC
0
(I/O)
Figure 9.12 Port C Pin Functions