Figure 21.7 Example Of Analog Input Protection Circuit; Figure 21.8 Analog Input Pin Equivalent Circuit; Figure 21.9 Example Of Analog Input Circuit - Renesas HD6417641 Hardware Manual

2
* R
1
*
Note: Value are referene value.
1.
10 µF
2. R : input impedance
in

Figure 21.7 Example of Analog Input Protection Circuit

AN0 to AN7
Note: Value are referene value.

Figure 21.8 Analog Input Pin Equivalent Circuit

Sensor output impeddance
Up to 3 kΩ
Sensor input
Low-pass filter
C to 0.1 µF
Note: Value are referene value.

Figure 21.9 Example of Analog Input Circuit

AV
CC
100 Ω
in
AN0 to AN7
0.1 µF
AV
SS
0.01 µF
3 kΩ
20 pF
This LSI
Cin =
15pF
Section 21 A/D Converter
This LSI
to A/D converter
A/D converter
equivalent circuit
3 kΩ
20pF
Rev. 4.00 Sep. 14, 2005 Page 817 of 982
REJ09B0023-0400