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8 Memories
8.8 FUSE - Configuration and User Fuses
8.8.2 Fuse 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
- 8.1 Overview
- 8.2 Memory Map
- 8.3 In-System Reprogrammable Flash Program Memory
- 8.4 SRAM Data Memory
- 8.5 EEPROM Data Memory
- 8.6 USERROW - User Row
- 8.7 LOCK - Memory Sections Access Protection
- 8.8 FUSE - Configuration and User Fuses
  - 8.8.1 Fuse Summary
  - 8.8.2 Fuse Description
    - 8.8.2.1 Watchdog Configuration
      Watchdog Configuration
    - 8.8.2.2 Brown-Out Detector Configuration
      Brown-Out Detector Configuration
    - 8.8.2.3 Oscillator Configuration
      Oscillator Configuration
    - 8.8.2.4 System Configuration 0
      System Configuration 0
    - 8.8.2.5 System Configuration 1
      System Configuration 1
    - 8.8.2.6 Code Size
      Code Size
    - 8.8.2.7 Boot Size
      Boot Size
- 8.9 SIGROW - Signature Row
- 8.10 I/O Memory
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
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