Overview The ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, this microcontroller achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. Features • High Performance, Low Power 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 16 MIPS Throughput at 16 MHz (ATmega165PA/645P) – Up to 20 MIPS Throughput at 20 MHz (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 • 16K Bytes (ATmega165A/ATmega165PA) • 32K Bytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA) • 64K Bytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P) – EEPROM • 512 Bytes (ATmega165A/ATmega165PA) • 1K bytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA) • 2K bytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P) – Internal SRAM • 1K Bytes (ATmega165A/ATmega165PA) • 2K Bytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA) • 4K Bytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P) – 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 • 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 – 54/69 Programmable I/O Lines – 64/100-lead TQFP, 64-pad QFN/MLF and 64-pad DRQFN • Speed Grade: – ATmega 165A/165PA/645A/645P: 0 - 16 MHz @ 1.8 - 5.5V – 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: • 1 MHz, 1.8V: 215 µA • 32 kHz, 1.8V: 8 µA (including Oscillator) – Power-down Mode: 0.1 µA at 1.8V – Power-save Mode: 0.6 µA at 1.8V (Including 32 kHz RTC
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