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microchip公司的PIC32MX4系列是高性能通用和USB的32位闪存微控制器(MCU),它的MIPS32 M4K内核是32位内核,有5级流水线,最大频率为80MHz,性能到达1.56 DMIPS/MHz (Dhrystone 2.1),MCU工作电压从2.3V到3.6V,闪存32KB到512KB(尚有12KB引导闪存),8K到32K SRAM,主要用在嵌入式系统如家庭娱乐,个人娱乐和家庭网络等.本京电港论坛文章先容了PIC32MX4主要特点,方框架图,以及PIC32MX4多媒体板主要特点,方框架图,以及各个模块如ZigBee模块,RS-232串行模块, TFT 320x240触摸屏显示器,USB毗连器,温度传感器等和MCU毗连电路原理图纸与多媒体板完整电路原理图纸. 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! PIC32MX4主要特点: 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 0 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 • 32K to 512K Flash memory (plus an additional 12 KB of boot Flash) • 8K to 32K 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 4-channel hardware DMA with automatic data size detection • USB 2.0-compliant full-speed device and On-The-Go (OTG) controller • USB has a dedicated DMA channel • 3 MHz to 25 MHz crystal oscillator • Internal 8 MHz and 32 kHz oscillators • Separate PLLs for CPU and USB clocks • Two I2C™ modules • Two UART modules with: - RS-232, RS-485 and LIN 1.2 support - IrDA® with on-chip hardware encoder and decoder • 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 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: - 1000 ksps conversion rate - Conversion available during Sleep, Idle • Two Analog Comparators • 5V tolerant input pins (digital pins only) PIC32MX4多媒体板 The MultiMedia Board® is a compact development system which provides a convenient platform to develop devices with multimedia content. The heart of the system is a 32-bit microcontroller PIC32MX4XXL which is programmed using external programmers ICD2® and ICD3® from Microchip®. The MultiMedia Board features integrated modules such as ZigBee wireless communication, RS-232 serial communication, TFT 320x240 touch screen display, two USB connectors for communication with the microcontroller, temperature sensor, etc. PIC32MX4多媒体板主要特点: 1. Headphone connector 2. Microphone connector 3. USB A HOST connector 4. USB MINI-B connector 5. Temperature sensor 6. MMC/SD card activity indicator 7. Signal LED diodes 8. Navigation joystick 9. Soldering pads 10. ICD2 and ICD3 programmers connector 11. Optional ZigBee module 12. RS-232 communication connector 13. AC/DC connector 14. TFT 320x240 display 15. Soldering pads
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