Features

 High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller Family

 Advanced RISC Architecture

̶ 131 Powerful Instructions – Most Single Clock Cycle Execution

̶ 32 x 8 General Purpose Working Registers

̶ Fully Static Operation

̶ Up to 20 MIPS Throughput at 20MHz

̶ On-chip 2-cycle Multiplier

 High Endurance Non-volatile Memory Segments

̶ 4/8/16/32KBytes of In-System Self-Programmable Flash program memory

̶ 256/512/512/1KBytes EEPROM

̶ 512/1K/1K/2KBytes Internal SRAM

̶ 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

̶ QTouch and QMatrix® acquisition

̶ Up to 64 sense channels

 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

̶ Six PWM Channels

̶ 8-channel 10-bit ADC in TQFP and QFN/MLF package

 Temperature Measurement

̶ 6-channel 10-bit ADC in PDIP Package

 Temperature Measurement

̶ Programmable Serial USART

̶ Master/Slave SPI Serial Interface

̶ Byte-oriented 2-wire Serial Interface (Philips I2C compatible)

̶ Programmable Watchdog Timer with Separate On-chip Oscillator

̶ On-chip Analog Comparator

̶ Interrupt and Wake-up on Pin Change