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R01UH0336EJ0102 Rev.1.02
Page 1296 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 23 A/D Converter
23.3.11
Self-Diagnosis Functions
The following self-diagnosis functions can be used to verify that the ADCAn
works properly:
1. Diagnosis of A/D conversion circuit
2. Diagnosis of channel multiplexer
3. Diagnosis of analog input pins
4. Diagnosis of channel sample and hold circuit
The figure below outlines the self-diagnosis functions, which are explained in
detail in the following sections.
Figure 23-15
Outline of Self-Diagnosis Functions
Internal pull-down
resistor
Internal pull-down
resistor
Internal pull-down
resistor
Internal pull-down
resistor
Internal pull-down
resistor
Multiplexer
Common S/H
DIAGOUT0
DIAGOUT1
DIAGOUT2
ADDIAGOUT
ADCAnIx
ADCAnIm
ADCAnDGCTL1.
ADCAnCDG01
ADCAnDGCTL1.
ADCAnCDG02
ADCAnDGCTL1.
ADCAnCDGx
Channel S/H
ADCAnSHCTL.
ADCAnCSEL01
0
1
0
1
Channel S/H
ADCAnSHCTL.
ADCAnCSEL02
0
1
0
1
Channel S/H
ADCAnSHCTL.
ADCAnCSELx
0
1
0
1