Renesas M16C/50 Series User Manual page 666

M16C/5L Group, M16C/56 Group
External circuit example
Open-circuit
ANi: ANi (i = 0 to 7), AN0-i, AN2-i, AN3_0 to AN3_2
AINRST0: Bit in the AINRST register
Figure 24.6 A/D Open-Circuit Detection Example on AVCC (Preconversion Charge)
External circuit example
Open-circuit
ANi: ANi (i = 0 to 7), AN0-i, AN2-i, AN3_0 to AN3_2
AINRST1: Bit in the AINRST register
Figure 24.7 A/D Open-Circuit Detection Example on AVSS (Preconversion discharge)
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
R
Analog input
ANi
C
Analog input
ANi
R C
Charge
AINRST0 = 1
AINRST1 = 1
Discharge
24. A/D Converter
On
Charge
control signal
Off
Discharge
control signal
Sampling
capacitor
Off
Charge
control signal
On
Discharge
control signal
Sampling
capacitor
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