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(8) AV
pin
DD
The AV
pin is the power supply pin of the analog circuit, and also supplies power to the input circuit of ANI0 to
DD
ANI11. Even in an application where a backup power supply is used, therefore, be sure to apply the same
voltage as the V
pin to the AV
DD
(9) Reading out A/D converter result register (ADCR)
A write operation to A/D converter mode register 1 (ADM1) and the analog input channel specification register
(ADS) may cause the ADCR contents to be undefined.
conversion (ADCS = 1). Incorrect conversion results may be read out at a timing other than the above.
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CHAPTER 11
pin as shown in Figure 11-8.
DD
Figure 11-8. Handling of AV
Main power supply
User's Manual U13850EJ6V0UD
A/D CONVERTER
Pin
DD
AV
REF
V
DD
AV
DD
Backup
capacitor
V
SS
AV
SS
Therefore, read the A/D conversion result during A/D
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