Features:

• High performance, low power Atmel® AVR® 8-Bit Microcontroller
• Advanced RISC architecture
  • 130 powerful instructions – most single clock cycle execution
  • 32 × 8 general purpose working registers
  • Fully static operation
  • Up to 20MIPS throughput at 20MHz (Atmel ATmega165A/325A/325PA/645A/3250A/3250PA/6450A/6450P)
  • On-chip 2-cycle multiplier
• High endurance non-volatile memory segments
  • In-system self-programmable flash program memory
    • 32KBytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
  • EEPROM
    • 1Kbytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
  • Internal SRAM
    • 2KBytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
  • Write/erase cycles: 10,000 flash/100,000 EEPROM
  • Data retention: 20 years at 85°C/100 years at 25°C (1)
  • Optional Boot Code Section with Independent Lock Bits
    • In-System Programming by On-chip Boot Program
    • True read-while-write operation
  • Programming lock for software security
• Atmel QTouch® library support
  • Capacitive touch buttons, sliders and wheels
  • Atmel QTouch and QMatrix acquisition
  • Up to 64 sense channels
• JTAG (IEEE std. 1149.1 compliant) interface
  • Boundary-scan capabilities according to the JTAG standard
  • Extensive on-chip debug support
  • Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• Peripheral Features
  • Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
  • One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
  • Real time counter with separate oscillator
  • Four PWM channels
  • 8-channel, 10-bit ADC
  • Programmable serial USART
  • Master/Slave SPI Serial Interface
  • Universal Serial Interface with Start Condition detector
  • Programmable Watchdog Timer with separate on-chip oscillator
  • On-chip Analog Comparator
  • Interrupt and Wake-up on pin change
• Special microcontroller features
  • Power-on reset and programmable Brown-out detection
  • Internal calibrated oscillator
  • External and internal interrupt sources
  • Five sleep modes: Idle, ADC Noise Reduction, Power-save, Power-down and Standby
• I/O and packages
  • 54/69 programmable I/O lines
  • 64/100-lead TQFP, 64-pad QFN/MLF and 64-pad DRQFN
• Speed grade:
  • ATmega325A/325PA/3250A/3250PA/6450A/6450P: 0 - 20MHz @ 1.8 - 5.5V
• Temperature range:
  • -40°C to 85°C industrial
• Ultra-low power consumption (picoPower® devices)
  • Active mode:
    • 1MHz, 1.8V: 215µA
    • 32kHz, 1.8V: 8µA (including oscillator)
  • Power-down mode: 0.1µA at 1.8V
  • Power-save mode: 0.6µA at 1.8V (Including 32kHz RTC)