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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