MICROCHIP ATXMEGA8E5-AUR

The AVR XMEGA E microcontrollers is a family of low-power, high-performance, and peripheral-rich CMOS 8/16-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the XMEGA E devices achieve throughputs 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. The XMEGA E devices provide the following features: in-system programmable flash; internal EEPROM and SRAM; four-channel enhanced DMA controller (EDMA); eight-channel event system with asynchronous event support; programmable multilevel interrupt controller; up to 26 general purpose I/O lines; 16-bit real-time counter (RTC) with digital correction; up to three flexible, 16-bit timer/counters with capture, compare and PWM modes; up to two USARTs; one I²C and SMBUS compatible two-wire serial interfaces (TWI); one serial peripheral interfaces (SPI); one XMEGA custom logic (XCL) with timer/counter and logic functions; CRC module; one 16-channel, 12-bit ADC with programmable gain, offset and gain correction, averaging, oversampling and decimation; one 2-channel, 12-bit DAC; two analog comparators with window mode; programmable watchdog timer with separate internal oscillator; accurate internal oscillators with PLL and prescaler; and programmable brown-out detection. The program and debug interface (PDI), a fast, two-pin interface for programming and debugging, is available. Selected devices also have an IEEE std. 1149.1 compliant JTAG interface, and this can also be used for on-chip debug and programming.