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ATmega4808/4809 Data Sheet ATmega4808/4809

ATmega4808 ATmega4809

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7 Memories
7.8 Fuses (FUSE)
7.8.2 Fuse Description

ATmega4808/4809

Introduction
megaAVR® 0-series Overview
Features
1 Silicon Errata and Data Sheet Clarification Document
2 Block Diagram
3 Pinout
4 I/O Multiplexing and Considerations
5 Conventions
6 AVR® CPU
7 Memories
- 7.1 Overview
- 7.2 Memory Map
- 7.3 In-System Reprogrammable Flash Program Memory
- 7.4 SRAM Data Memory
- 7.5 EEPROM Data Memory
- 7.6 User Row (USERROW)
- 7.7 Signature Row (SIGROW)
- 7.8 Fuses (FUSE)
  - 7.8.1 Fuse Summary - FUSE
  - 7.8.2 Fuse Description
    - 7.8.2.1 Watchdog Configuration
      Watchdog Configuration
    - 7.8.2.2 BOD Configuration
      BOD Configuration
    - 7.8.2.3 Oscillator Configuration
      Oscillator Configuration
    - 7.8.2.4 System Configuration 0
      System Configuration 0
    - 7.8.2.5 System Configuration 1
      System Configuration 1
    - 7.8.2.6 Application Code End
      Application Code End
    - 7.8.2.7 Boot End
      Boot End
    - 7.8.2.8 Lockbits
      Lockbits
- 7.9 Memory Section Access from CPU and UPDI on Locked Device
- 7.10 I/O Memory
8 Peripherals and Architecture
9 NVMCTRL - Nonvolatile Memory Controller
10 CLKCTRL - Clock Controller
11 SLPCTRL - Sleep Controller
12 RSTCTRL - Reset Controller
13 CPUINT - CPU Interrupt Controller
14 EVSYS - Event System
15 PORTMUX - Port Multiplexer
16 PORT - I/O Pin Configuration
17 BOD - Brown-out Detector
18 VREF - Voltage Reference
19 WDT - Watchdog Timer
20 TCA - 16-bit Timer/Counter Type A
21 TCB - 16-Bit Timer/Counter Type B
22 RTC - Real-Time Counter
23 USART - Universal Synchronous and Asynchronous Receiver and Transmitter
24 SPI - Serial Peripheral Interface
25 TWI - Two-Wire Interface
26 CRCSCAN - Cyclic Redundancy Check Memory Scan
27 CCL - Configurable Custom Logic
28 AC - Analog Comparator
29 ADC - Analog-to-Digital Converter
30 UPDI - Unified Program and Debug Interface
31 Instruction Set Summary
32 Electrical Characteristics
33 Typical Characteristics
34 Ordering Information
35 Package Drawings
36 Data Sheet Revision History
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7.8.2 Fuse Description

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