R01UH0136EJ0210 Rev.2.10
Page 631 of 800
Jul 31, 2012
M16C/64A Group
27. A/D Converter
Figure 27.8
A/D Open-Circuit Detection Example on AVSS (Preconversion discharge)
Figure 27.9
A/D Open-Circuit Detection (Discharge) Characteristics (Standard Characteristics)
External circuit example
Open-circuit
R
Analog input
ANi
Off
Discharge
AINRST1 = 1
On
Sampling
capacitor
Charge
control signal
Discharge
control signal
C
ANi: ANi (i = 0 to 7), ANEXi, AN0-i, AN2-i
AINRST1: Bit in the AINRST register
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The horizontal axis shows how many times A/D conversion is performed per ms.
For example, 20 kHz indicates A/D conversion is performed every 50
μ
s.
Measuring Condition (common)
VCC1 = 5.12 V
Analog input pin is AN0
R = 100 k
Ω
C = 100 pF between AN0 and GND
XIN = 10 MHz
Summary of Contents for M16C/60 Series
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