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ATXmega256A3 概述

ATXmega256A3, low power, high performance 8-bit AVR microcontroller featuring 256KB self-programming flash program memory, 8KB boot code section, 16KB SRAM, 4096-Byte EEPROM, external bus interface, 4-channel DMA controller, 8-channel event system, and up to 32 MIPS throughput at 32MHz. The ATxmega A3 series features 64-pin packages.

The ATXmega256A3 can be used in a wide range of applications, such as building, industrial, motor, board, and climate control; hand-held battery applications; factory automation; power tools; HVAC; networking, metering, large home appliances, and optical and medical devices.

ATXmega256A3 特性

• High-performance, Low-power 8-bit AVR XMEGA Microcontroller.
• Non-volatile Program and Data Memories
  - 64 KB - 256 KB of In-System Self-Programmable Flash.
  - 4 KB - 8 KB Boot Code Section with Independent Lock Bits.
  - 2 KB - 4 KB EEPROM.
  - 4 KB - 16 KB Internal SRAM.
• Peripheral Features
  - Four-channel DMA Controller with support for external requests.
  - Eight-channel Event System.
  - Seven 16-bit Timer/Counters.
  
  • Four Timer/Counters with 4 Output Compare or Input Capture channels.
  • Three Timer/Counters with 2 Output Compare or Input Capture channels.
  • High-Resolution Extension on all Timer/Counters.
  • Advanced Waveform Extension on two Timer/Counters.
  - Seven USARTs
  
  • IrDA Extension on 1 USART.
  - AES and DES Crypto Engine.
  - Two Two-wire Interfaces with dual address match (I2C and SMBus compatible).
  - Three SPI (Serial Peripheral Interfaces).
  - 16-bit Real Time Counter with Separate Oscillator.
  - Two Eight-channel, 12-bit, 2 Msps Analog to Digital Converters.
  - One Two-channel, 12-bit, 1 Msps Digital to Analog Converter.
  - Four Analog Comparators with Window compare function.
  - External Interrupts on all General Purpose I/O pins.
  - Programmable Watchdog Timer with Separate On-chip Ultra Low Power Oscillator.
• Special Microcontroller Features
  - Power-on Reset and Programmable Brown-out Detection.
  - Internal and External Clock Options with PLL.
  - Programmable Multi-level Interrupt Controller.
  - Sleep Modes: Idle, Power-down, Standby, Power-save, Extended Standby.
  - Advanced Programming, Test and Debugging Interfaces.
  • JTAG (IEEE 1149.1 Compliant) Interface for test, debug and programming.
  • PDI (Program and Debug Interface) for programming, test and debugging
• I/O and Packages
  - 50 Programmable I/O Lines.
  - 64-lead TQFP.
  - 64-pad QFN.
• Operating Voltage: 1.6 – 3.6V.
• Speed performance
  - 0 – 12 MHz @ 1.6 – 3.6V.
  - 0 – 32 MHz @ 2.7 – 3.6V.