ATXMEGA128A4U-CU

ATXMEGA128A4U-CU is a high-performance, low-power AVR® XMEGA® microcontroller based on the AVR enhanced RISC architecture. By executing instructions in a single clock cycle, the AVR XMEGA device achieves 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. It is supported with a full suite of program and system development tools, including C compilers, macro assemblers, program debugger/simulators, programmers, and evaluation kits.

• Five USARTs with IrDA support for one USART
• Two 2-wire interfaces with dual address match (I2C and SMBus compatible)
• Two serial peripheral interfaces (SPIs), AES and DES crypto engine
• 16-bit real time counter (RTC) with separate oscillator
• Two analogue comparators with window compare function, and current sources
• Operating voltage range from 1.6 to 3.6V
• Power-on reset and programmable brown-out detection
• Internal and external clock options with PLL and prescaler
• 128K + 8Kbytes flash, 2Kbytes EEPROM, 8Kbytes SRAM
• 49-pin VFBGA package, -40 to +85°C temperature range

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