Описание
The AVR XMEGA is a family of low power, high performance, and peripheral rich 8/16-bit microcontrollers 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. The program and debug interface (PDI), a fast, two-pin interface for programming and debugging, is available The AVR XMEGA E5 devices have five software selectable power saving modes. The idle mode stops the CPU while allowing the SRAM, EDMA controller, event system, interrupt controller, and all peripherals to continue functioning. The power-down mode saves the SRAM and register contents, but stops the oscillators, disabling all other functions until the next TWI, or pin-change interrupt, or reset. In power-save mode, the asynchronous real-time counter continues to run, allowing the application to maintain a timer base while the rest of the device is sleeping. In standby mode, the external crystal oscillator keeps running while the rest of the device is sleeping. This allows very fast startup from the external crystal, combined with low power consumption. In extended standby mode, both the main oscillator and the asynchronous timer continue to run. In each power save, standby or extended standby mode, the low power mode of the internal 8MHz oscillator allows very fast startup time combined with very low power consumption.
- High-performance, low-power ® AVR® XMEGA® 8/16-bit Microcontroller
- Nonvolatile program and data memories
- 16KB of in-system self-programmable flash
- 512Bytes EEPROM
- 2KB internal SRAM
- Peripheral features
- Four-channel enhanced DMA controller with 8/16-bit address match
- Eight-channel event system
- Asynchronous and synchronous signal routing
- Quadrature encoder with rotary filter
- Three 16-bit timer/counters
- One timer/counter with four output compare or input capture channels
- Two timer/counter with two output compare or input capture channels
- High resolution extension enabling down to 4ns PWM resolution
- Waveform extension for control of motor, LED, lighting, H-bridge, high drives, and more
- Fault extension for safe and deterministic handling and/or shut-down of external driver
- Special microcontroller features
- Power-on reset and programmable brown-out detection
- Internal and external clock options with PLL
- Programmable multilevel interrupt controller
- Five sleep modes
- Programming and debug interface
- PDI (Program and Debug Interface)
- I/O and Packages
- 26 programmable I/O pins
- 7x7mm 32-lead TQFP
- 5x5mm 32-lead VQFN
- 4x4mm 32-lead UQFN
- Operating Voltage
- 1.6 – 3.6V
- Operating frequency
- 0 – 12MHz from 1.6V
- 0 – 32MHz from 2.7V
