Description
The Microchip 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 twelve channel, 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 prescaler; and programmable brown-out detection.
- High-performance, Low-power Atmel® AVR® XMEGA® 8/16-bit Microcontroller
- Nonvolatile program and data memories
- 16K – 128KBytes of in-system self-programmable flash
- 4K – 8KBytes boot section
- 1K – 2KBytes EEPROM
- 2K – 8KBytes internal SRAM
- Peripheral Features
- Four-channel event system
- Four 16-bit timer/counters
- Two timer/counters with 4 output compare or input capture channels
- Two timer/counters with 2 output compare or input capture channels
- High-resolution extensions on all timer/counters
- Advanced waveform extension (AWeX) on one timer/counter
- Two USARTs with IrDA support for one USART
- Two two-wire interfaces with dual address match (I2C and SMBus compatible)
- Two serial peripheral interfaces (SPIs)
- CRC-16 (CRC-CCITT) and CRC-32 (IEEE 802.3) generator
- 16-bit real time counter (RTC) with separate oscillator
- One twelve-channel, 12-bit, 200ksps Analog to Digital Converter
- Two Analog Comparators 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
- Capacitive touch buttons, sliders and wheels
- Special microcontroller features
- Power-on reset and programmable brown-out detection
- Internal and external clock options with PLL and prescaler
- 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
