Features
High Performance, Low Power Atmel AVR 8-Bit Microcontroller
Advanced RISC Architecture
– 130 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16MIPS Throughput at 16MHz
– On-Chip 2-cycle Multiplier
High Endurance Non-volatile Memory Segments
– In-System Self-programmable Flash Program Memory
32KBytes (ATmega325/ATmega3250)
64KBytes (ATmega645/ATmega6450)
–EEPROM
1Kbytes (ATmega325/ATmega3250)
2Kbytes (ATmega645/ATmega6450)
– Internal SRAM
2Kbytes (ATmega325/ATmega3250)
4Kbytes (ATmega645/ATmega6450)
– Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
– Data retention: 20 years at 85°C/100 years at 25°C – 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
– 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
– 53/68 Programmable I/O Lines
– 64-lead TQFP, 64-pad QFN/MLF, and 100-lead TQFP
Speed Grade:
– ATmega325V/ATmega3250V/ATmega645V/ATmega6450V:
0 - 4MHz @ 1.8 - 5.5V; 0 - 8MHz @ 2.7 - 5.5V
– Atmel ATmega325/3250/645/6450:
0 - 8MHz @ 2.7 - 5.5V; 0 - 16MHz @ 4.5 - 5.5V
Temperature range:
–-40
°C to 85°C IndustrSial
Ultra-Low Power Consumption
– Active Mode:
1MHz, 1.8V: 350A
32kHz, 1.8V: 20A (including Oscillator)
– Power-down Mode:
100 nA at 1.8V
8-bit Atmel
Microcontroller
with In-System
Programmable
Flash
ATmega325/V
ATmega3250/V
ATmega645/V
ATmega6450/V
2570N–AVR–05/11