Datasheet

Section 9 I/O Ports
Rev. 3.00 Sep. 14, 2006 Page 135 of 408
REJ09B0105-0300
9.6.2 Pin Functions
The correspondence between the register specification and the port functions is shown below.
• PB3/AN3/ExtU pin
Register ADCSR LVDCR
Bit Name CH2 CH1 CH0 VDDII Pin Function
1 AN3 input pin 0 1 1
0 AN3 input/ExtU input pin
1 PB3 input pin
Setting value
Other than the above values
0 PB3 input/ExtU input pin
• PB2/AN2/ExtD pin
Register ADCSR LVDCR
Bit Name CH2 SCAN CH1 CH0 VDDII Pin Function
0 0 1 0 1 AN2 input pin
0 1 1 X 0 AN2 input/ExtD input pin
1 PB2 input pin
Setting value
Other than the above values
0 PB2 input/ExtD input pin
[Legend]
X: Don't care
• PB1/AN1 pin
Register ADCSR
Bit Name CH2 SCAN CH1 CH0 Pin Function
0 X 0 1
0 1 1 X
AN1 input pin
Setting value
Other than the above values PB1 input pin
[Legend]
X: Don't care