R01UH0822EJ0100 Rev.1.00
Page 882 of 1041
Jul 31, 2019
RX13T Group
26. 12-Bit A/D Converter (S12ADF)
26.6.11
Notes on Noise Prevention
To prevent the analog input pins (AN000 to AN007) from being destroyed by abnormal voltage such as excessive surge,
a capacitor should be inserted between AVCC0 and AVSS0, and a protection circuit should be connected to protect the
above analog input pins as shown
Figure 26.35
Sample Protection Circuit for Analog Inputs
10µF
0.01µF
Note 1. The values shown here are reference values.
Note 2. Rin: Signal source impedance
0.1µF
Rin
*2
*1
AVCC0
AN000 to AN007
AVSS0