The Atmel ATXMEGA32A4U-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 devices achieve CPU throughput approaching one million instructions per second (MIPS) per MHz, allowing the system designer to optimise 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.
● Non-volatile program and data memories
● 16K - 128KB of in-system self-programmable flash
● 4K - 8KB boot section
● 1K - 2KB EEPROM
● 2K - 8KB internal SRAM
● Four channel DMA controller
● Eight channel event system
● Five 16 bit timer/counters
● High resolution extensions on all timer/counters
● Advanced waveform extension (AWeX) on one timer/counter
● USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) device compliant
● 32 endpoints with full configuration flexibility
● Five USARTs with IrDA support for one USART
● Two two 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
● One twelve channel, 12 bit, 2msps analog to digital converter
● One two channel, 12 bit, 1msps digital to analog converter
● Two analog comparators with window compare function, and current sources
