ATmega325, ATmega3250, ATmega645, ATmega6450 Features:

• ATmega325
  • 32-Kbyte self-programming Flash Program Memory
  • 2-Kbyte SRAM
  • 1-KByte EEPROM
  • 64 pin version
• ATmega3250
  • 32-Kbyte self-programming Flash Program Memory
  • 2-Kbyte SRAM
  • 1-KByte EEPROM
  • 100 pin version
• ATmega645
  • 64-Kbyte self-programming Flash Program Memory
  • 4-Kbyte SRAM
  • 2-KByte EEPROM
  • 64 pin version
• ATmega6450
  • 64-Kbyte self-programming Flash Program Memory
  • 4-Kbyte SRAM
  • 2-KByte EEPROM
  • 100 pin version
• 8 Channel 10-bit A/D-converter
• JTAG interface for on-chip-debug
• Up to 16 MIPS throughput at 16 MHz (325, 3250, 645, 6350)
• 1.8 - 5.5 Volt Operation (325V, 3250V, 645V, 6350V)