atxmega192a1-cu ATMEL Corporation, atxmega192a1-cu Datasheet - Page 36

• Manufacturer Part Number: atxmega192a1-cu
• Description: Atxmega64a1 8/16 Bit Microcontroller With 64/128/192/256k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

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ATxmega A1
Figure 23-1. ADC overview
Each ADC has 4 registers defining a MUX selection with a corresponding result register. This
means that 4 channels may be sampled within 1.5 µs without any intervention by the application
other than starting the conversion, and the result will be available in 4 data registers.
The ADC may be configured to make 8- or 12-bit results, reducing the conversion time (propaga-
tion delay) from 3.5 µs for 12-bit to 2.5 µs for 8-bit resolution.
ADC conversion results are provided left- or right adjusted with optional ‘1’ or ‘0’ padding. This
eases calculation when the result is represented as a signed integer (signed 16-bit number).
PORTA and PORTB each have one ADC. Notation of these peripherals are ADCA and ADCB.
Channel A MUX selection
Channel B MUX selection
Channel C MUX selection
Channel D MUX selection
1-64 X
Reference selection
Configuration
ADC
Trigger
Event
Channel C
Channel D
Channel A
Channel B
Register
Register
Register
Register
8067A–AVR–02/08