r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 624

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
Figure 28.5
Figure 28.6
Note:
Note:
1. The conversion result for an open circuit varies with external circuits. Careful evaluation should be
1. The conversion result for an open circuit varies with external circuits. Careful evaluation should be
performed before using this function.
Open
Open
performed before using this function.
Selected)
Selected)
A/D Open-Circuit Detection Example on AVCC Side (Precharge before Conversion
A/D Open-Circuit Detection Example on AVSS Side (Discharge before Conversion
External circuit
External circuit
example
example
R
R
(1)
(1)
C
C
Analog input
Analog input
i = 0 to 11
i = 0 to 11
ANi
ANi
ADDDAEN
ADDDAEN
Precharge
Discharge
Chopper amp
Chopper amp
OFF
OFF
capacitor
capacitor
ON
ON
control signal
control signal
control signal
control signal
Precharge
Precharge
Discharge
Discharge
28. A/D Converter
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