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31 ADC - Analog-to-Digital Converter
31.5 Register Description

Introduction
Family Overview
Features
1 Block Diagram
2 Pinout
3 I/O Multiplexing and Considerations
4 Hardware Guidelines
5 Power Domains
6 Conventions
7 AVR® CPU
8 Memories
9 GPR - General Purpose Registers
10 Peripherals and Architecture
11 NVMCTRL - Nonvolatile Memory Controller
12 CLKCTRL - Clock Controller
13 SLPCTRL - Sleep Controller
14 RSTCTRL - Reset Controller
15 CPUINT - CPU Interrupt Controller
16 EVSYS - Event System
17 PORTMUX - Port Multiplexer
18 PORT - I/O Pin Configuration
19 BOD - Brown-out Detector
20 VREF - Voltage Reference
21 WDT - Watchdog Timer
22 TCA - 16-bit Timer/Counter Type A
23 TCB - 16-Bit Timer/Counter Type B
24 RTC - Real-Time Counter
25 USART - Universal Synchronous and Asynchronous Receiver and Transmitter
26 SPI - Serial Peripheral Interface
27 TWI - Two-Wire Interface
28 CRCSCAN - Cyclic Redundancy Check Memory Scan
29 CCL - Configurable Custom Logic
30 AC - Analog Comparator
31 ADC - Analog-to-Digital Converter
- 31.1 Features
- 31.2 Overview
- 31.3 Functional Description
- 31.4 Register Summary
- 31.5 Register Description
  - 31.5.1 Control A
    Control A
  - 31.5.2 Control B
    Control B
  - 31.5.3 Control C
    Control C
  - 31.5.4 Control D
    Control D
  - 31.5.5 Interrupt Control
    Interrupt Control
  - 31.5.6 Interrupt Flags
    Interrupt Flags
  - 31.5.7 Status
    Status
  - 31.5.8 Debug Control
    Debug Control
  - 31.5.9 Control E
    Control E
  - 31.5.10 Control F
    Control F
  - 31.5.11 Command
    Command
  - 31.5.12 PGA Control
    PGA Control
  - 31.5.13 Positive Input Multiplexer
    Positive Input Multiplexer
  - 31.5.14 Negative Input Multiplexer
    Negative Input Multiplexer
  - 31.5.15 Result
    Result
  - 31.5.16 Sample
    Sample
  - 31.5.17 Temporary n
    Temporary n
  - 31.5.18 Window Comparator Low Threshold
    Window Comparator Low Threshold
  - 31.5.19 Window Comparator High Threshold
    Window Comparator High Threshold
32 DAC - Digital-to-Analog Converter
33 UPDI - Unified Program and Debug Interface
34 Instruction Set Summary
35 Electrical Characteristics
36 Characteristics Graphs
37 Ordering Information
38 Package Drawings
39 Data Sheet Revision History
Microchip Information