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XMEGA A3系列

XMEGA A3系列
所属分类
ATxmega系列单片机
目标应用
工业控制气候控制手持式电池工厂自动化ZigBee电动工具建筑控制电机控制空调控制板网络测量白色家电光纤接口医疗应用

The Atmel® AVR® XMEGA™ A3 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 A3 achieves throughputs approaching 1 Million Instructions Per Second (MIPS) per MHz 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 the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one 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 A3 devices provide the following features: In-System Programmable Flash with Read-While-Write capabilities, Internal EEPROM and SRAM, four-channel DMA Controller, eight-channel Event System, Programmable Multi-level Interrupt Controller, 50 general purpose I/O lines, 16-bit Real Time Counter (RTC), seven flexible 16-bit Timer/Counters with compare modes and PWM, seven USARTs, two Two Wire Serial Interfaces (TWIs), three Serial Peripheral Interfaces (SPIs), AES and DES crypto engine, two 8-channel 12-bit ADCs with optional differential input with programmable gain, one 2-channel 12-bit DACs, four analog comparators 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 8/16-bit Atmel® AVR® XMEGATM Microcontroller
Non-volatile Program and Data Memories
   [1] 64 KB - 256 KB of In-System Self-Programmable Flash
   [2] 4 KB - 8 KB Boot Code Section with Independent Lock Bits
   [3] 2 KB - 4 KB EEPROM
   [4] 4 KB - 16 KB Internal SRAM
Peripheral Features
   [1] Four-channel DMA Controller with support for external requests
   [2] Eight-channel Event System
   [3] Seven 16-bit Timer
   [4] Seven USARTs
   [5] AES and DES Crypto Engine
   [6] Two Two-wire Interfaces with dual address match (I2C and SMBus compatible)
   [7] Three SPI (Serial Peripheral Interfaces)
   [8] 16-bit Real Time Counter with Separate Oscillator
   [9] Two Eight-channel, 12-bit, 2 Msps Analog to Digital Converters
   [10] One Two-channel, 12-bit, 1 Msps Digital to Analog Converter
   [11] Four Analog Comparators with Window compare function
   [12] External Interrupts on all General Purpose I/O pins
   [13] Programmable Watchdog Timer with Separate On-chip Ultra Low Power Oscillator
Special Microcontroller Features
   [1] Power-on Reset and Programmable Brown-out Detection
   [2] Internal and External Clock Options with PLL
   [3] Programmable Multi-level Interrupt Controller
   [4] Sleep Modes: Idle, Power-down, Standby, Power-save, Extended Standby
   [5] Advanced Programming, Test and Debugging Interfaces
I/O and Packages
   [1] 50 Programmable I/O Lines
   [2] 64-lead TQFP
   [3] 64-pad QFN
Operating Voltage:1.6 – 3.6V
Speed performance
   [1] 12 MHz @ 1.6 – 3.6V
   [2] 32 MHz @ 2.7 – 3.6V

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