Figure 18-1. Analog to Digital Converter Block Schematic
Current
Source
ISRCEN
AREF/ISCR
ISCR
AREFEN
AVCC
Internal 2.56V
Reference
REFS0
REFS1
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
Coarse/Fine DAC
10
10
AMP2-/ADC6
ADC7
AMP1-/ADC8
AMP1+/ADC9
ADC10
ADCH
ADCL
+
-
SAR
10
-
+
AMP0-
AMP0+
CKADC
CKADC
-
+
-
+
AMP2+
GND
CONTROL
ADC Conversion
Complete IRQ
Bandgap
Temp Sensor
VCC/4
ISRC
CK
PRESCALER
AMP2CSR AMP0CSR AMP1CSR
REFS1 REFS0 ADLAR MUX4 MUX3 MUX2 MUX1 MUX0
ADMUX
ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0
ADCSRA
Edge
Detector
ADATE
ADASCR ADTS3 ADTS2 ADTS1 ADTS0
ADCSRB
-
-
-
198
ATmega16/32/64/M1/C1 [DATASHEET]
7647O–AVR–01/15
MICROCHIP [ MICROCHIP ]
