Datasheet

Section 21 A/D Converter
Rev. 3.00 Mar 21, 2006 page 600 of 788
REJ09B0300-0300
AVCC
*
1
*
1
*
2
AN0 to AN7
AVSS
Notes: Values are reference values.
1.
2.
R
in
: Input impedance
R
in
100 Ω
0.1 µF
0.01 µF10 µF
AVref
Figure 21.8 Example of Analog Input Protection Circuit
20 pF
To A/D converterAN0 to AN7
10 kΩ
Note: Values are reference values.
Figure 21.9 Equivalent Circuit of Analog Input Pin
21.7.6 Module Stop Mode Setting
A/D converter operation can be enabled or disabled using the module stop control register. The
initial setting is for A/D converter operation to be halted. Register access is enabled by canceling
module stop mode. For details, refer to section 26, Power-Down Modes.