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ATXMEGA64A1 Datasheet(PDF) 42 Page - ATMEL Corporation

Part # ATXMEGA64A1
Description  8/16-bit XMEGA A1 Microcontroller
PDF  99 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATXMEGA64A1 Datasheet(HTML) 42 Page - ATMEL Corporation

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42
8067I–AVR–04/09
XMEGA A1
Figure 24-1. ADC overview
Each ADC has four MUX selection registers with a corresponding result register. This means
that four channels can be sampled within 1.5 µs without any intervention by the application other
than starting the conversion. The results will be available in the result registers.
The ADC may be configured for 8- or 12-bit result, reducing the minimum conversion time (prop-
agation delay) from 3.5 µs for 12-bit to 2.5 µs for 8-bit result.
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 has one ADC. Notation of these peripherals are ADCA and ADCB,
respectively.
ADC
Channel A
Register
Channel B
Register
Channel C
Register
Channel D
Register
1-64 X
Channel A MUX selection
Channel B MUX selection
Channel C MUX selection
Channel D MUX selection
Event
Trigger
Configuration
Reference selection



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