MC_Memory-Map

Devices

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# Data memory map of ATmega328p

• 32 general purpose working registers (GPR)
  • temporary storage; doing calculations
• 64 I/O registers (MC_Special-Function-Register, I/O memory)
  • special registers for controlling & setting things up
  • the functions:
    • Status register
    • Timer
    • Serial communication
    • I/O Ports
    • …
• 160 extended I/O registers
  • extra registers for more tasks
  • the functions:
    • I/O Ports
    • …
• 2048 (ATmega328p) Bytes of internal data SRAM (Static Random Access Memory)
  • a chunk of memory - storing data temporarily
  • directly accessible
  • 8 bits wide