Atmel AVR Microcontrollers

AVR is a family of microcontrollers developed since 1996 by Atmel (now part of Microchip Technology).

Resources & Tips

• Wikipedia - Atmel AVR
• Official Atmel AVR Page
• ATMega Comparison Table

Tools

• homebrew-avr - AVR toolchain for macOS.
• Setting up AVR-GCC Toolchain on Linux and macOS

Basic Families

Refer to Wikipedia - Basic Families.

• tinyAVR (ATtiny series)
  • 0.5–16 KB program memory, 6–32-pin package.
  • ATtiny Comparison Chart
• megaAVR (ATmega series)
  • 4–256 KB program memory, 28–100-pin package.
• XMEGA (ATxmega series)
  • 16–384 KB program memory, 44–100-pin package.
  • 32-pin package: XMEGA-E (XMEGA8E5).
• FPSLIC (AVR with FPGA)
  • FPGA 5k to 40k gates.
  • Features SRAM for AVR program code.
• 32-bit AVRs (AVR32)
  • Completely different 32-bit architecture unrelated to 8-bit AVR.
  • SIMD and DSP instructions.

See Also

• STM32 (Wikipedia)