Datasheet

192
7728G–AVR–06/10
ATtiny87/ATtiny167
Figure 17-1. Analog to Digital Converter Block Schematic
ADC0
ADC1
ADC2
ISRC / ADC3
ADC4
ADC5
ADC6
ADC8
ADC9
ADC10
Temperature
Sensor
Bandgap
Reference
AVCC
/
4
AGND
AVCC
Neg.
Input
Mux.
Mux.
Pos.
Input
Mux.
x8 / x20 Gain
Amplifier
ADC Multiplexer
Output
10-bit DAC
Sample & Hold
Comparator
Conversion Logic
Mux.
Decoder
ADC Data Register
(ADCH / ADCL)
ADC Control & Status
Register A & B (ADCSRA/ADCSRB)
ADC Multiplexer
Select (ADMUX)
Analog Misc.
(AMISCR)
Prescaler
ADC[9..0]
ADTS[2..0]
ADPS[2..0]
REFS0
ADLAR
ADEN
BIN
ADSC
ADATE
ADIE
ADC Conversion
Complete IRQ
Interrupt
Flags
Start
ADIF
ADIF
REFS1
Trigger
Select
MUX[4..0]
AREFEN XREFEN
8-Bit Data Bus
Internal
2.56 / 1.1V
Reference
ADC7
AREF
XREF