ATTINY87_10 Datasheet, PDF (192/292 Pages) ATMEL Corporation – 8-bit AVR Microcontroller with 8K/16K Bytes In-System Programmable Flash and LIN Controller

Figure 17-1. Analog to Digital Converter Block Schematic
8-Bit Data Bus
ADC Conversion
Complete IRQ
Analog Misc.
(AMISCR)
ADC Multiplexer
Select (ADMUX)
Internal
2.56 / 1.1V
Reference
AVCC
ADC Control & Status
Register A & B (ADCSRA/ADCSRB)
ADC Data Register
(ADCH / ADCL)
Trigger
Select
Interrupt
Flags
Mux.
Decoder
Prescaler
Start
Conversion Logic
10-bit DAC
Sample & Hold
Comparator
AGND
AVCC_/4
Bandgap
Reference
Temperature
Sensor
ADC10
ADC9
ADC8
AREF
XREF
ADC7
ADC6
ADC5
ADC4
ISRC / ADC3
ADC2
ADC1
ADC0
Pos.
Input
Mux.
ADC Multiplexer
Output
Mux.
x8 / x20 Gain
Amplifier
Neg.
Input
Mux.
192 ATtiny87/ATtiny167
8265A–AVR–08/10