* High Performance, Low Power Atmel® AVR® 8-Bit Microcontroller * Advanced RISC Architecture * 135 Powerful Instructions – Most Single Clock Cycle Execution * 32 × 8 General Purpose Working Registers * Fully Static Operation * Up to 16 MIPS Throughput at 16MHz * On-Chip 2-cycle Multiplier * High Endurance Non-volatile Memory Segments * 64K/128K/256KBytes of In-System Self-Programmable Flash * 4Kbytes EEPROM * 8Kbytes Internal SRAM * 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 * Endurance: Up to 64Kbytes Optional External Memory Space * 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