A96G140/A96G148/A96A148 User’s manual
14. 12-bit ADC
153
Clock
Selector
ADCDRH (R), ADCDRL (R)
-
+
Control
Logic
Comparator
ADSEL[3:0]
(Select one input pin
of the assigned pins)
ADCLK
Input Pins
M
U
X
AN0
Reference
Voltage
AVREF
AVSS
AN1
AN2
AN14
AN15
ADCIFR
AFLAG
INT_ACK
Clear
Clear
To interrupt
block
MUX
VDD
Start
M
U
X
T3 A match signal
EXTINT0~7
REFSEL
TRIG[2:0]
3
ADST
T1 A match signal
EXTINT8
Figure 79. 12-bit ADC Block Diagram
Figure 80. A/D Analog Input Pin with a Capacitor
AVREF
Analog
Power
Input
22uF
Figure 81. A/D Power (AVREF) Pin with a Capacitor
0 - 100
Ω
0
–
1000pF
ANx
Analog
Input