Datasheet

Section 9 I/O Ports
Rev. 3.00 Sep. 14, 2006 Page 136 of 408
REJ09B0105-0300
• PB0/AN0 pin
Register ADCSR
Bit Name CH2 SCAN CH1 CH0 Pin Function
0 0 0 0
0 1 X X
AN0 input pin Setting
value
Other than the above values PB0 input pin
[Legend]
X: Don't care
9.7 Port C
Port C is a general I/O port also functioning as an external oscillation pin and clock output pin.
Each pin of the port C is shown in figure 9.7. The register setting of CKCSR has priority for
functions of the pins for both uses.
PC1/OSC2/CLKOUT
PC0/OSC1
Port C
Figure 9.7 Port C Pin Configuration
Port C has the following registers.
• Port control register C (PCRC)
• Port data register C (PDRC)