upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 325

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(8) AV
(9) Reading out A/D conversion result register (ADCR)
The AV
ANI11. Even in an application where a backup power supply is used, therefore, be sure to apply the same voltage
as the V
A write operation to the A/D converter mode register (ADM) and analog input channel specification register (ADS)
may cause the ADCR contents to be undefined. Therefore, read ADCR during A/D conversion (ADCS bit = 1).
Incorrect conversion results may be read out at a timing other than the above.
DD
pin
DD
DD
pin is the power supply pin of the analog circuit, and also supplies power to the input circuit of ANI0 to
pin to the AV
Main power supply
DD
pin as shown in Figure 11-8.
Figure 11-8. Handling of AV
CHAPTER 11 A/D CONVERTER
User’s Manual U12768EJ4V1UD
Backup
capacitor
DD
Pin
AV
V
AV
V
AV
DD
SS
REF
DD
SS
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