Datasheet

235
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
Figure 21-1. Analog to Digital Converter Block Schematic
MUX2 MUX1 MUX0MUX3REFS1 REFS0 ADLAR -
ADPS2 ADPS1 ADPS0ADIEADEN ADSC ADATE ADIF
ADMUX
ADCSRA
ADTS2 ADTS1 ADTS0
ADASCR
---
ADCSRB
Edge
Detector
Sources
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
AMP1-/ADC8
AMP1+/ADC9
ADC10
AMP0-
AMP0+
-
+
AMP0CSR
-
+
AMP1CSR
+
-
SAR
10
10
ADCH
ADCL
Coarse/Fine DAC
10
Internal 2.56V
Reference
REFS0 REFS1
AREF
AVCC
PRESCALERCK
CK ADC
CONTROL
CK ADC
ADC CONVERSION
COMPLETE IRQ
GND
Bandgap
ADATE
ADTS3
Only on AT90PWM2/3