7.1 Features

  • 8-Bit, High-Performance AVR RISC CPU
    • 135 Instructions
    • Hardware Multiplier
  • 32 8-Bit Registers Directly Connected to the ALU
  • Stack in RAM
  • Stack Pointer Limit Check
  • Illegal Opcode Check
  • Stack Pointer Accessible in I/O Memory Space
  • Direct Addressing of up to 64 KB of Memory
  • Efficient Support for 8-, 16-, and 32-Bit Arithmetic
  • Configuration Change Protection for System-Critical Features
  • Native On-Chip Debugging (OCD) Support:
    • Two Hardware Breakpoints
    • Change of Flow, Interrupt, and Software Breakpoints
    • Run-Time Read-Out of Stack Pointer (SP) Register, Program Counter (PC), and Status Register (SREG)
    • Register File Read- and Writable in Stopped Mode