Description
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 device achieves throughputs CPU 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 AVR XMEGA D4 devices provide the following features: in-system programmable flash with read-while-write capabilities; internal EEPROM and SRAM; four-channel event system and programmable multilevel interrupt controller, 34 general purpose I/O lines, 16-bit real-time counter (RTC); four flexible, 16-bit timer/counters with compare and PWM channels; two USARTs; two two-wire serial interfaces (TWIs); two serial peripheral interfaces (SPIs); one twelvechannel, 12-bit ADC with optional differential input with programmable gain; two analog comparators (ACs) with window mode; programmable watchdog timer with separate internal oscillator; accurate internal oscillators with PLL and presale; and programmable brown-out detection. This offers a free QTouch library for embedding capacitive touch buttons, sliders and wheels functionality into AVR microcontrollers. All AVR XMEGA devices are supported with a full suite of program and system development tools, including C compilers, macro assemblers, program debugger/simulators, programmers, and evaluation kits.
- High-performance, low-power ® AVR® XMEGA® 8/16-bit Microcontroller
- Nonvolatile program and data memories
- 64KBytes of in-system self-programmable flash
- 2KBytes EEPROM
- 4K – 8KBytes internal SRAM
- Peripheral Features
- Four-channel event system
- Two USARTs with IrDA support for one USART
- ternal interrupts on all general purpose I/O pins
- Programmable watchdog timer with separate on-chip ultra low power oscillator
- QTouch® library support
- Special microcontroller features
- Power-on reset and programmable brown-out detection
- Internal and external clock options with PLL and presale
- Programmable multilevel interrupt controller
- Five sleep modes
- Programming and debug interfaces
- PDI (program and debug interface)
- I/O and packages
- 34 Programmable I/O pins
- 44 – lead TQFP
- 44 – pad VQFN/QFN
- 49 – ball VFBGA
- Operating voltage
- 1.6 – 3.6V
- Operating frequency
- 0 – 12MHz from 1.6V
- 0 – 32MHz from 2.7V
