PIC32 MCU具有哪些特性参数应用？

　　Microchip公司的PIC32系列MCU采用5级流水线MIPS32® M4K® 32位内核，工作频率80MHz，在零等待状态闪存接入时的性能为1.56 DMIPS/MHz （Dhrystone 2.1）， MCU工作电压2.3V- 3.6V，具有众多的外设，有两个编程和调试接口，多达16路10位ADC和两个模拟比较器，主要用于超小型图像/用户接口，以太网/USB/CAN/连接，多任务嵌入控制和高性能音频。本文介绍了PIC32 MCU主要特性，方框图，以及PIC32音频开发板主要特性及主要元件，电路图和PCB布局图。
　　Microchip’s 32-bit portfolio with the MIPS® M4K® offers high performance microcontrollers， and all the tools needed to develop your embedded project. With free software， low cost development tools， and pin/peripheral compatibility from 16-bit product lines， PIC32 MCUs shorten time to market and allow your designs to grow. PIC32 gives your application the processing power， memory and peripherals your design needs！
　　PIC32 MCU主要特性：
　　High-Performance 32-bit RISC CPU：
　　• MIPS32® M4K® 32-bit core with 5-stage pipeline
　　• 80 MHz maximum frequency
　　• 1.56 DMIPS/MHz （Dhrystone 2.1） performance at zero Wait state Flash access
　　• Single-cycle multiply and high-performance divide unit
　　• MIPS16e® mode for up to 40% smaller code size
　　• Two sets of 32 core register files （32-bit） to reduce interrupt latency
　　• Prefetch Cache module to speed execution from Flash
　　Microcontroller Features：
　　• Operating voltage range of 2.3V to 3.6V
　　• 64K to 512K Flash memory （plus an additional 12 KB of Boot Flash）
　　• 16K to 128K SRAM memory
　　• Pin-compatible with most PIC24/dsPIC® DSC devices
　　• Multiple power management modes
　　• Multiple interrupt vectors with individually programmable priority
　　• Fail-Safe Clock Monitor mode
　　• Configurable Watchdog Timer with on-chip Low-Power RC oscillator for reliable operation Peripheral Features：
　　• Atomic SET， CLEAR and INVERT operation on select peripheral registers
　　• Up to 8-channels of hardware DMA with automatic data size detection
　　• USB 2.0-compliant full-speed device and
　　On-The-Go （OTG） controller：
　　- Dedicated DMA channels
　　• 10/100 Mbps Ethernet MAC with MII and RMII interface：
　　Dedicated DMA channels
　　• CAN module：
　　- 2.0B Active with DeviceNet™ addressing support
　　- Dedicated DMA channels
　　• 3 MHz to 25 MHz crystal oscillator
　　Peripheral Features （Continued）：
　　• Internal 8 MHz and 32 kHz oscillators
　　• Six UART modules with：
　　- RS-232， RS-485 and LIN support
　　- IrDA® with on-chip hardware encoder and decoder
　　• Up to four SPI modules
　　• Up to five I2C™ modules
　　• Separate PLLs for CPU and USB clocks
　　• Parallel Master and Slave Port （PMP/PSP） with 8-bit and 16-bit data， and up to 16 address lines
　　• Hardware Real-Time Clock and Calendar （RTCC）
　　• Five 16-bit Timers/Counters （two 16-bit pairs combine to create two 32-bit timers）
　　• Five Capture inputs
　　• Five Compare/PWM outputs
　　• Five external interrupt pins
　　• High-speed I/O pins capable of toggling at up to 80 MHz
　　• High-current sink/source （18 mA/18 mA） on all I/O pins
　　• Configurable open-drain output on digital I/O pins
　　Debug Features：
　　• Two programming and debugging Interfaces：
　　- 2-wire interface with unintrusive access and real-time data exchange with application
　　- 4-wire MIPS® standard enhanced Joint Test Action Group （JTAG） interface
　　• Unintrusive hardware-based instruction trace
　　• IEEE Standard 1149.2 compatible （JTAG） boundary scan
　　Analog Features：
　　• Up to 16-channel， 10-bit Analog-to-Digital Converter：
　　- 1 Msps conversion rate
　　- Conversion available during Sleep and Idle
　　• Two Analog Comparators
　　PIC32 MCU主要应用：
　　High Impact Graphics/User Interfaces
　　Ethernet/USB/CAN/Connectivity
　　Multitasking Embedded Control
　　High Performance Audio
　　20120524092519313.gif
　　图1.PIC32 MCU方框图
　　PIC32音频开发板
　　Audio Development Board
　　The audio development board for PIC32 （DM320011） provides developers a flexible platform for 24-bit audio record and playback， USB Digital Audio， MP3 Decode and Sample Rate Conversion. The board also provides an interface to Microchip’s 16/32-bit PIC® MCU Accessory Development Platform for iPod and iPhone enabling Apple® authorized MFi licensees.
　　PIC32音频开发板主要特性：
　　• High-performance MCU
　　• Wolfson WM8960 audio codec with up to 48 kHz sampling rate and up to 24-bit resolution
　　• Headphone out， Line-in jacks， and an on-board MIC
　　• TFT color display with 220x176 resolution
　　• PICtail™ Plus Connector
　　• General purpose user switches and LEDs
　　20120524092520357.gif
　　图2.音频开发板外形图和元件分布图
　　音频开发板元件表：
　　20120524092520528.gif
　　20120524092520376.gif
　　图3.音频开发板电路图：显示电路
　　20120524092520956.gif
　　图4.音频开发板电路图：音频电路
　　20120524092520503.gif
　　图5.音频开发板电路图：MCU和USB电路
　　20120524092520607.gif
　　图6.开发板电路图：电源电路
　　2012052409252077.gif
　　图7.音频开发板电路图：通信电路（扩展连接器，ICSP，开关和LED）
　　20120524092520166.gif
　　图8.音频开发板PCB布局图：顶层
　　详情请见：
　　61156G.pdf（5.22 MB）2012-5-24 11:37 上传
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　　和
　　ADB for PIC32 User Guide.pdf（1.08 MB）2012-5-24 11:37 上传
　　-1