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User’s Manual U11969EJ3V0UM00
CHAPTER 9 A/D CONVERTER
9.5.2 Scan mode operation
The analog inputs from ANI0/ANI8 to the analog input specified with the ADM0 register are selected sequentially
and converted to digital. The A/D conversion results are stored in the ADCRn register corresponding to the analog
input. (Refer to Table 9-3, Figure 9-8.)
When the conversion of all the specified analog inputs ends, the INTAD interrupt is generated, and A/D conversion
is ended.
When 1 is written to the CE bit of the ADM0 register, A/D conversion can be restarted.
This mode is suitable for applications which always monitor two or more analog inputs.
Table 9-3. Correspondence between Analog Input Pin and ADCRn Register
(scan mode (A/D trigger scan)
Analog Input
A/D Conversion Results Register
ANI0/ANI8
ADCR0
ANI1/ANI9
ADCR1
ANI2/ANI10
ADCR2
ANI3/ANI11
ADCR3
ANI4/ANI12
ADCR4
ANI5/ANI13
ADCR5
ANI6/ANI14
ADCR6
ANI7/ANI15
ADCR7
Figure 9-8. Example of Scan Mode (A/D trigger scan) Operation
ANI0
ANI1
ANI2
ANI3
ANI4
ANI5
ANI6
ANI7
ANI8
ANI9
ANI10
ANI11
ANI12
ANI13
ANI14
ANI15
ADCR0
ADCR1
ADCR2
ADCR3
ADCR4
ADCR5
ADCR6
ADCR7
A/D Converter
ADM0
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