The ATXMEGA128A1U-C7U is a low power, high-performance 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 1MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. The Atmel 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. The AVR XMEGA A1U device provides 128kB self-programming flash program memory, 8kB boot code section, 8kB SRAM, 2048byte EEPROM and up to 32MIPS throughput at 32MHz.
● Power-on reset and programmable brown-out detection
● Internal and external clock options with PLL and prescaler
● Programmable multilevel interrupt controller
● Sleep modes - Idle, power-down, standby, power-save, extended standby
● Programming and debug interfaces - JTAG (IEEE 1149.1 com) interface, including boundary scan, PDI
● 4-channel DMA Controller
● 8-channel Event system
● Eight 16-bit timers/counters
● One USB device interface - USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) device compliant
● Eight USARTs with IrDA support for one USART
● Four 2-wire interfaces with dual address match (I²C and SMBus compatible)
● Four Serial peripheral interfaces (SPIs)
● AES and DES crypto engine
● 16-bit Real-time counter (RTC) with separate oscillator
● Two 2-channel, 12-bit, 1MSPS digital to analog converters
● Four analog comparators (ACs) with window compare function and current sources
● External interrupts on all general purpose I/O pins
● Programmable watchdog timer with separate on-chip ultra low power oscillator
● QTouch® library support
