M16C65 Datasheet, PDF (700/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
27. A/D Converter
External circuit example
Precharge
AINRST0 = 1
R
Analog input
ANi
Open-circuit
C
On
Precharge
control signal
Off
Discharge
control signal
Sampling
capacitor
ANi: ANi (i = 0 to 7), ANEXi, AN0-i, AN2-i
AINRST0: Bit in the AINRST register
Figure 27.5 A/D Open-Circuit Detection Example on AVCC (Precharge)
AINRST1 = 1
External circuit example
Analog input
ANi
Open-circuit
R
C
Off
Precharge
control signal
On
Discharge
control signal
Discharge
Sampling
capacitor
ANi: ANi (i = 0 to 7), ANEXi, AN0-i, AN2-i
AINRST1: Bit in the AINRST register
Figure 27.6 A/D Open-Circuit Detection Example on AVSS (Predischarge)
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 665 of 791