The Atmel ATXMEGA16E5-AU is a low power, high performance, and peripheral rich 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing instructions in a single clock cycle, the AVR XMEGA device achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing the system designer to optimize power consumption versus processing speed. The AVR CPU combines a rich instruction set with 32 general purpose working registers. All 32 registers are directly connected to the arithmetic logic unit, allowing two independent registers to be accessed in a single instruction, executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs many times faster than conventional single-accumulator or CISC based microcontrollers.
142 instructions
Hardware multiplier
32x8-bit registers directly connected to the ALU
Stack in RAM
Stack pointer accessible in I/O memory space
Configuration change protection of system-critical features
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