The ATXMEGA64A4U-AU is a 8-bit low power and peripheral rich Microcontroller Unit based on the AVR enhanced RISC architecture. By executing instructions in a single clock cycle, the AVR XMEGA devices 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 (ALU), 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.
- High performance
- Non-volatile program and data memories
- 4-channel DMA controller
- 8-channel event system
- Five 16-bit timer/counters
- One USB device interface
- External interrupts on all general purpose I/O pins
- Power-on reset and programmable brown-out detection
- Programmable multilevel interrupt controller
- 5 sleep modes
- Power-on reset and programmable brown-out detection
- Programmable multi-level interrupt controller
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